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CompTIA® A+ 220-801 and 220-802: Authorized

1. Quick Check Quick Answer 63 Detailed Answer 72 Quick Answer 63 Detailed Answer 72 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 73 61 62 63 64 65 220 801 Practice Exam B 55 O C They represent addressing using 128 bits D They require fiber optic connections What operating CPU temperature is typical O O O O A B C D 60 Fahrenheit 60 Celsius 72 Fahrenheit 72 Celsius You need to install a printer that can be used to print payroll checks on paper forms that have a carbon backing Which printer technology should you select O O O O A B C D Impact Laser Inkjet Thermal In current motherboards which memory bus width can be accomplished by using the dual channel technology O O O O A B C D 64 bit 128 bit 256 bit 448 bit Which of the following best describes a hub O O O O A B C D Inspects traffic and accepts or declines transmission Determines the best route to transmit data Broadcasts data to all network devices Broadcasts data to specific network devices Which of the following tools could a person use to test an AC outlet Select the two best answers 0000 A B C D Multimeter PSU tester Receptacle tester Loopback plug Quick Check Quick Answer 63 D
2. O A O B oOo OO m IP addresses can be managed from a central location The network speed can automatically adjust based on the type of traffic being generated The hosts file on the computer can be validated for proper entries Media access control addresses can be changed Computers can automatically get new addressing when moved to a different network segment 21 Ona laptop which of the following would most likely be a pointing device O A O B O C O D Serial mouse PS 2 mouse USB mouse Touchpad Quick Check Quick Answer 63 Detailed Answer 67 Quick Answer 63 Detailed Answer 67 Quick Answer 63 Detailed Answer 67 Quick Answer 63 Detailed Answer 67 Quick Answer 63 Detailed Answer 67 48 22 23 24 25 26 27 Chapter 3 Which of the following storage technologies is used by traditional hard disk drives O A O B O C O D Magnetic Optical Impact Solid state On which type of computer is RAM the most important O A O B O C O D Gaming PC Virtualization workstation AV workstation HTPC A client brings in a printer that is giving a paper feed error What is the most likely cause O A O B O C O D The separation tab The developing rollers The paper tray The pickup rollers Which of the following is the default port for HTTPS O A O B O C O D Port 25 Port 80 Port 143 Port 443
3. Answer B Make the customer truly feel comfortable by sitting down next to her and taking the time to explain the technical concept from a simple and concise point of view The less jargon the better Recommending a training class is tantamount to dismissing the customer off hand Telling the customer to read the manual is just downright rude know say this often to you the reader however you are a tech so reading the manual is what you do The customer is not supposed to be super technically oriented The acronym RTM should be kept within technical circles Answer A Line filters are required for DSL modems to share phone lines with a phone A line filter shields the phone line from digital noise and interference caused by telephone devices and makes DSL communications possible If DSL is installed in a SOHO small office home office devices such as telephones fax machines answer ing machines dial up modems and security alarms should have line filters But don t install one where the DSL modem is located A heat sink is used to disperse heat away from a CPU A router allows access to another network or the Internet A coaxial split ter is used to split the signal coming from a cable TV company so that multiple TVs can be used at the same time Answer D Hard drives run pretty hot keeping an area of airflow around the drive can help to keep it cool The key is to make sure the PC has proper airflow This can be done by addin
4. 62 63 64 220 801 Practice Exam B 73 Answer C 172 31 1 1 is the only address listed that is private It is within the Class B range of private addresses 172 16 1 1 172 31 255 255 11 58 254 169 is not private because it is on the Class A 11 network The Class A private range is within the 10 0 0 0 network 169 255 10 41 is not private either Microsofts APIPA however uses the 169 254 0 0 network which is private 192 169 0 1 is public because of the second octet 169 The Class C private range is 192 168 0 0 192 168 255 255 Answer C Always have a positive outlook The customer will have fewer concerns and you will be more relaxed If you appear to be wavering when problems occur the customer will have less confidence in your skills as will you When you need to make a technical decision be certain and decisive and implement the solution immediately Answer B The Pv6 loopback address used for testing is 1 This will determine if IPv6 is working correctly on the network card but will not generate network traffic It exists on every computer that runs IPv6 127 0 0 1 is the IPv4 loopback address 192 168 0 0 is simply a private IP network number FE80 10 is the range of auto assigned addresses in IPv6 Answer C The only statement that is correct concerning IPv6 is that it uses 128 bit addressing This is compared to IPv4 which uses 32 bit addresses IPv6 and IPv4 can co habit a computer with no problems IPv6 is not
5. B The BTX form factor provides the most room for effective cooling in a computer case BTX was designed as a replacement for ATX it was expected to help cool devices that used a lot of power and created a lot of heat However CPUs RAM and video cards have new designs that allow them to use less voltage and therefore create less heat making BTX less necessary Still BTX combines a large cooling area with smart design and positioning of devices that allows for more cooling than is pos sible with ATX and its derivatives or the various ITX versions Answer D Some power supplies have selectors for the United States and Europe 115 and 230 volts However your co worker might need an adapter too otherwise the plug may not fit Newer power supplies might auto sense the voltage If the power supply doesn t have one of those red switches check the documentation to see if it can switch the voltage automatically Line conditioners simply clean the power for a specific voltage If your circuit has dirty power for example it is fluctuating between 113 and 130 volts a line conditioner will keep it steady at 120 volts Answer C LCD contrast ratio is the brightness of the brightest color measured as white compared to the darkest color measured as black Static contrast ratio measurements are static this done as a test with a checkerboard pattern But there is also the dynamic contrast ratio a newer technology in LCD displays that adjusts
6. What is the maximum distance at which a Class 2 Bluetooth device can receive signals from a Bluetooth access point O A O B O C O D 100 meters 10 meters 5 meters 1 meter Which of the following form factors does a VGA connector comply with O A O B O C O D 8P8C 15 pin D shell microATX RG 6 Quick Check Quick Answer 63 Detailed Answer 67 Quick Answer 63 Detailed Answer 68 Quick Answer 63 Detailed Answer 68 Quick Answer 63 Detailed Answer 68 Quick Answer 63 Detailed Answer 68 Quick Answer 63 Detailed Answer 68 28 29 30 31 32 220 801 Practice Exam B 49 Quick Check You and a co worker are running network cables above the drop Quick Answer 63 ceiling The co worker accidentally touches a live AC power line Detailed Answer 68 and is thrown off the ladder and onto the ground He is dazed and can t stand He is no longer near the AC power line What should you do first O A Cut the power at the breaker O B Move the co worker farther down the hall O C Apply CPR O D Call 911 A customer reports that an optical drive in a PC is no longer Quick Answer 63 responding What question should you ask first Detailed Answer 68 O A What has changed since the optical drive worked properly O B Did you log in with your administrator account O What did you modify since the optical drive worked
7. emerging market TRY future certification mer Strata IT Fundamentals CompTIA Basic Certification for individuals entering jobs that involve computers Steps to Certification Steps to Getting Certified and Staying Certified Review Exam Objectives Review the certification objectives to make sure you know what is covered in the exam http www comptia org certifications testprep examobjectives aspx Practice for the Exam After you have studied for the certification take a free assessment and sample test to get an idea what type of questions might be on the exam http www comptia org certifications testprep practicetests aspx Purchase an Exam Voucher Purchase your exam voucher on the CompTIA Marketplace which is located at www comptiastore com Take the Test Select a certification exam provider and schedule a time to take your exam You can find exam providers at the following link http www comptia org certifications testprep testingcenters aspx Join the Professional Community Join IT Pro Community The free IT Pro online community provides valuable content to students and professionals PIDIO Prato Career IT Job Resources Where to start in IT Career Assessments Salary Trends US Job Board Forums on Networking Security Computing and Cutting Edge Technologies Access to blogs written by Industry Experts Current information on Cutting Edge Technologies Access to various industry resource links and art
8. 169 254 10 10 O D 192 168 10 10 80mm and 120mm are common sizes for what type of PC component O A Casefans O B CPUs O C O D Heat sinks Memory modules What is the total number of devices that can be daisy chained to an IEEE 1394 port O A 127 O B 63 O C 15 O D 255 What does a yellow exclamation point next to a device in the Device Manager indicate O A A driver is not properly installed for this device O B The device is disabled O C The driver is not digitally signed O D The device driver needs to be upgraded Beep codes are generated by which of the following A CMOS B RTC C POST D Windows O O Quick Check Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 10 11 220 801 Practice Exam B 45 How should you apply spray cleaner to a monitor O A Spray the cleaner directly on the monitor screen O B Spray the cleaner on the top of the monitor and wipe down O Spray evenly on the monitor D Spray the cleaner on a clean lint free cloth first Which bus slot provides the highest video performance O A PCI O B SCSI O C AGP O D PCle Which of the following indicates that a printer is network ready O A O B O C O D An RJ11 jack A USB connector An RJ45 jack An
9. 64 bit oper ating system 32 bit OSes are limited to 4 GB of RAM and in some cases 3 25 GB Many computers today especially custom computers such as virtualization systems and gaming computers require more than 4 GB of RAM so a 64 bit operating system is the only choice Data Execution Prevention DEP is a security feature in today s Operating systems it stops a program from executing code in a forbidden area of memory Most of today s 32 bit or 64 bit systems offer this Unsigned drivers are based on the operating system itself whether that particular OS is 32 bit or 64 bit will not be a factor You must be an administrator to allow the use of unsigned drivers 32 bit operating systems can run older 16 bit programs but 64 bit operating systems will have problems running 16 bit programs even in compatibility mode Answer A Overclocking is the act of increasing your CPU s operating speed beyond its normal rated speed The rest of the terms are not used in relation to this concept Answer B COM1 communications port 1 is a serial port it sends or receives one bit at a time up to 115 200 Kbps A typical example is the 9 pin male DE9 port inaccurately referred to also as the DB9 DVI is a video port LPT1 is an older parallel printing port SCSI is a parallel port used by hard drives and tape drives The older COM port is used by dial up modems It is also used to program devices such as handheld terminals You don t see COM ports
10. 71 72 73 74 75 220 801 Practice Exam B 57 What is the recommended method for handling an empty toner cartridge O A O B O C O D Throw it away Incinerate it Refill it Recycle it Which type of cable would you use to connect a laptop directly to a PC O A Cat 5e patch cable O B Parallel cable O C IEEE 1394b cable O D Cat 5e crossover cable A customer experiences a server crash When you arrive the manager is upset about this problem What should you do in this scenario O A O B O C O D Stay calm and do the job as efficiently as possible Take the customer out for a cup of coffee Avoid the customer and get the job done quickly Refer the customer to your supervisor Which of the following types of printers uses toner O A O B O C O D Impact Laser Inkjet Thermal As you are servicing a manager s PC at your company you run across a list of names of employees who are supposedly about to be let go from the company Some of these people are co workers What should you do Turn the sheet over Actas if you never saw the list In secret tell everyone who was on the list OOOO 50 oO DW gt Yell at the manager for having that list out Quick Check Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 7
11. a large corporation or enterprise environment tape backup such as the Digital Linear Tape DLT is the best media for backing up DLTs and Super DLTs SDLT can have a capacity as high as 800 GB allowing for a huge amount of backup as compared to DVD and dual layer DVD 4 7 17 GB and external USB hard drives up to 64 GB or so though this number will undoubtedly increase as time goes on Answer C The MPEG Audio Layer III MP3 works best when dealing with multiple platforms Advanced Audio Codec AAC is used more commonly on Apple computers and devices and gaming consoles Windows Media Audio WMA is a Microsoft for mat developed especially for the Windows Media Player MOV is a QuickTime file for mat meant to be used with movies and other video Answer D Smartphones typically use Secure Digital SD cards more to the point microSD cards SSD stands for solid state drive This technology is implemented as flash based hard drives or as adapter cards with DDR memory and a battery CompactFlash CF cards are a bit bulkier and might be used in conjunction with PCs laptops and handheld computers USB flash drives won t fit inside a typical smart phone and so are relegated to hanging on people s key chains and acting as mobile transporters of data Answer C In this scenario the organization probably has thin client computers for its users These have operating systems that are embedded in flash memory and the rest of the inf
12. dynamically during darker scenes in an attempt to give better black levels It usually has a higher ratio but it should be noted that there isn t any real uniform standard for measuring contrast ratio 45 46 47 48 49 50 51 220 801 Practice Exam B 71 Answer B Most antistatic straps come with a 1 mega ohm resistor which can protect against surges However the best way to avoid a surge is to 1 make sure the comput er is unplugged before working on it and 2 don t touch any components that hold a charge This means don t open power supplies or CRT monitors and don t touch capacitors on any circuit boards such as motherboards And of course stay away from any other electrical devices when working on computers Answer D High Definition Multimedia Interface HDMI as the word multimedia implies can transmit video and audio signals VGA RGB and DVI are video standards only with DVI being the newest and most commonly used on PC monitors Answer C Whenever you re working in someone s home make sure that there is an adult available It is not your responsibility to watch over children nor should any company agree to have its consultants do this If the person insists on leaving and you can pack up your things before he goes do so and then call your supervisor to inform her of the event Answer D A router can limit network broadcasts through segmenting and pro grammed routing of data This i
13. firmware level An administrator password is something used in Windows or on a networking device and a local password is something used in software Answer B The power management settings on the laptop can cause the display to automatically dim when the AC adapter is unplugged In fact this is the default on many laptops in order to conserve battery power These can be configured within Power Options in Windows You can certainly set the display to full brightness when on battery power it just isn t recommended Laptops can operate properly when con nected to the AC power adapter or when using the battery only The display brightness of a laptop isn t affected by any security settings Answer B Always use an antistatic strap to avoid ESD electrostatic discharge Power tools and battery operated tools such as cordless drills should be avoided Although multimeters and screwdrivers are tools you might use they might not always be necessary whereas the antistatic strap should a ways be worn Answers A and E Advantages of using DHCP include IP addresses can be managed from a central location and computers can automatically get new addressing when moved to a different network segment perhaps one that uses a different DHCP serv er Quality of Service QoS adjusts the network speed based on the type of traffic generated DHCP has nothing to do with the Hosts txt file that file contains static entries of hostname to IP address
14. length of a standard USB 2 0 cable is 5 meters Answer B The VGA connector uses a D shell also referred to as D sub 15 pin connector It has three rows of five pins The 8P8C is the technically correct name for an RJ45 networking plug microATX is a motherboard form factor commonly used in smaller PCs and HTPCs RG 6 is the connector used for cable TV and cable Internet connections Answer D Because the immediate danger is gone call 911 right away Then apply first aid and CPR as necessary The next step would be to shut the power off at the electrical panel or call the building supervisor to have the power shut off Answer A You should first ask if anything has changed since the optical drive worked properly Don t blame the user by asking what you modified it implies that you think the user caused the issue Always ask if anything has changed first before any other questions Try not to accuse a user of accessing inappropriate websites because this could be considered inflammatory and harassment Think like a robot with the single purpose of fixing the problem but act like a professional and courteous human being Answer A The floppy disk drive FDD stores a maximum of 1 44 MB on a removable disk 1 38 MB of which is actual data CD ROM drives use removable discs however the maximum they can store is much greater Note that magnetic disks are spelled with a k while optical discs are spelled with a c The acronym ROM usual
15. on PCs today but you might still see them as an add on card in the field used to access networks as an administrator fail safe in case other Internet connectivity methods fail In rural areas people may still use internal or external dial up modems The external modem is what connects to the COM1 serial port Though USB is also technically a serial port most technicians and professionals refer to the serial port as COM1 or COM2 16 17 18 19 20 21 22 220 801 Practice Exam B 67 Answer C The SSID is the most important piece of information required to connect to a wireless network it is the name of the wireless network The wireless channel number isn t necessarily needed the wireless access point WAP might auto negotiate the channel Also MAC address filtering is not enabled by default so the MAC address might not be needed In fact this would be entered by the admin at the wireless access point not from the client computer The administrator password is needed only if you wanted to make configuration changes to the wireless access point For example if you wanted to implement MAC filtering you would have to log in to the WAP with an admin password to configure it Answer A The supervisor or system password is used so that only the technician can get into the BIOS CMOS The user password is used to password protect what ever operating system is running on the computer but it does it from the
16. what would happen if a person asked the owner of the server out for a cup of coffee but I m pretty sure the reaction would be negative You don t want to avoid the customer but you don t have to engage in anything except fixing the problem The customer should be referred to your supervisor only if the person gets in the way of you doing your work Answer B The laser printer uses toner Impact printers use ribbon inkjet printers use ink cartridges and thermal printers use specially coated paper Answer B There isn t much you can do in a situation like this The best thing is to ignore it and act as if it never happened Technicians must be security minded In addition the purported list might be real but it might not be It isn t your call to make However before working at a customer site you should ask that all confidential mate rials be removed before you begin work Answer A Network installations require that the network card be configured for Preboot Execution Environment PXE This allows the network card to boot off of the network locate a network installation server and request that the installation begin This configuration might be done in the BIOS of the computer if the network adapter is integrated to the motherboard within a special program in Windows or one that boots from CD if the network adapter is an adapter card Peripheral Component Interconnect PCI is an expansion bus that accepts network adapt
17. 5 58 76 77 78 79 80 Chapter 3 In order to perform a network installation of Windows which of the following must be supported by the computer s network interface card O A PXE O B PCI O C PCL O D PnP In which of the following slots would you place an 8x video card O A PCI O B PCle O C AGP O D AMR Which of the following is the newest type of mouse connection O A Serial O B USB O C PS 2 O D Parallel How can you reduce the chance of ESD Select the three best answers Use an antistatic strap Use an antistatic mat Raise the temperature Raise the humidity Lower the humidity O O GCO O O nmo ow gt Work in a carpeted area Which of the following is a unique characteristic of a dual core processor versus a single core processor O A A dual core processor has two cores with separate caches on the same physical chip B A dual core processor has several unique cores with the same cache on two different chips gle core processor D A dual core processor requires more RAM to function than a single core processor O O C A dual core processor uses higher voltage than a sin O Quick Check Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 75 Quick Answer 63 Detailed Answer 76 81 82 83 84 85 86 220 801 Practi
18. 5 0 Operational Procedures 11 0000au 0 0 5 Test Taking Lips 2 2 scien AS pede See Pea eee ene 5 Getting Ready for the Practice Tests ooo 6 Chapter 2 220 801 Practice Exam A eee 7 Practice Questions 0 8 Domain 1 0 PC Hardware ooo 8 Domain 2 0 Networking 15 Domain 3 0 Laptops oooooccccccco 20 Domain 4 0 Printerga iaaa haa EEE K EEE 22 Domain 5 0 Operational Procedures 24 Quick Check Answer Key 27 Answers and Explanations 0 0 00 29 Domain 1 0 PC Hardware 00 0000 c cece 29 Domain 2 0 Networking 34 Domain 3 0 Laptops 00 0 ees 37 Domain 4 0 Printers 000 38 Domain 5 0 Operational Procedures 40 Chapter 3 220 801 Practice Exam B 43 Practice Questions ues senri crnce dtidada indicada ra aaa a 44 Quick Check Answer Key 63 Answers and Explanations ooo 65 Chapter 4 220 801 Practice Exam C 79 Practice QUeSt ONS a e aida he ains 80 Quick Check Answer Key 102 Answers and Explanati0DS ooo 104 Chapter 5 Review of the 220 801 Exams 121 Review of the Domains ooo 121 Review What You Know 0 00 0 122 More Test Taking Tips ooo 123 Taking the Real Exa 124 Chapter 6 Introduction to the 220 802 Exam 125 Exam Breakdown 000000 125 Domain 1 0 Operating Systems 33 126 Domain 2 0 Security 22 126 Domain 3 0 Mobile Devices 9 00 000 000005 126 Domain 4 0 Troubleshooting 36 127 Test Takin
19. D Have you been to any inappropriate websites Quick Answer 63 Which device can store a maximum of 1 44 MB on a removable Detailed Answer 68 disk O A Floppy drive O B CD ROM O C ROM O D Compact Flash Quick Answer 63 What wireless networking standard operates at 5 GHz only Detailed Answer 68 O A 802 11a O B 802 11b O C 802 119 O D 802 11n Quick Answer 63 What is the PC equivalent of FireWire Detailed Answer 69 A IEEE 1284 B USB C IEEE 1394 D ISA 0000 50 33 34 35 36 37 38 Chapter 3 Which type of RAM has a peak transfer of 12 800 MB s O O O O A B C D DDR3 800 DDR2 1600 DDR3 1600 DDR2 800 Which type of printer uses a print head ribbon and tractor feed O O O O A B C D Laser Impact Inkjet Thermal What is a possible symptom of a failing CPU O O O O A B C D CPU is beyond the recommended voltage range Computer won t boot BIOS reports low temperatures within the case Spyware is installed into the browser Which of the following cable types is not affected by EMI but requires specialized tools to install O O O O A B C D Cat 6 STP Fiber optic Coaxial A computer you are working on has a lot of dust inside it How should you clean this O O O O A B C D Disassemble the power supply and remove the dust Use a vacuum to clean up the dust Use a surface dust cl
20. EXAM CRAM Aoi ites Y AUTHORIZED DAVID L PROWSE EXAM GRAMI CompTIA A 220 801 and 220 802 Authorized Practice Questions Fifth Edition David L Prowse CompTIA A 220 801 and 220 802 Authorized Practice Questions Exam Cram Fifth Edition Copyright O 2013 by Pearson Education Inc All rights reserved No part of this book shall be reproduced stored in a retrieval system or transmitted by any means electronic mechanical photocopying recording or otherwise without written permission from the publisher No patent liability is assumed with respect to the use of the information contained herein Although every precaution has been taken in the preparation of this book the publisher and author assume no responsibility for errors or omissions Nor is any liability assumed for damages resulting from the use of the information contained herein ISBN 13 978 0 7897 4974 1 ISBN 10 0 7897 4974 2 Printed in the United States of America First Printing July 2012 Trademarks All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized Pearson IT Certification cannot attest to the accu racy of this information Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark Warning and Disclaimer Every effort has been made to make this book as complete and as accurate as possi ble but no warranty or fitness is implied T
21. SCSI connector You just turned off a printer to maintenance it What should you be careful of when removing the fuser O A O B O C O D The fuser being hot The fuser being wet The fuser being fragile The fuser releasing toner Where is the memory controller located in a Core 2 Duo system O A Onthe CPU O B On memory O C Within the chipset O D Within the PCle controller Which of the following connectors is used for musical equipment O A MIDI HDMI DVI O B O C O D DisplayPort Quick Check Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 65 Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 66 46 12 13 14 15 16 Chapter 3 Although not used as often as a Phillips screwdriver this tool is sometimes used to remove screws from the outside of a comput er case or from within a laptop O A O B O C O D Monkey wrench Torx wrench Channel lock Pliers What is the main advantage of selecting a 64 bit operating system over a 32 bit operating system O A 000 50 Ow The ability to use software based data execution prevention DEP The ability to use unsigned drivers The ability to access more than 4 GB of RAM The ability to run multiple 16 bit programs in separate memory spaces Moving your CPU s speed beyond its
22. Welcome to CompTIA A 220 801 and 220 802 Practice Questions Exam Cram The sole purpose of this book is to provide you with practice questions that are complete with answers and explanations to help you learn drill and review for the CompTIA A certification exams The book offers 700 questions that will help you practice each exam domain and will help you assess your knowledge before you take the real exam The detailed answers to every question will aid in reinforcing your knowledge about the concepts associated with the 2012 version of the CompTIA A exams Who This Book Is For The CompTIA A exams are designed for individuals with at least 12 months of hands on experience in the lab or field If you have that experience then this book will be an excellent late stage study tool However if you have not acquired that experience I recommend that you register for a hands on A course or at the very least purchase an authorized A study guide such as the A Exam Cram or the more in depth A Cert Guide After you take the course and or read the study guide or guides return to this book as your late stage test preparation to be used just before taking the real exams What You Will Find in This Book In every chapter devoted to practice exams you will find the following three elements gt Practice Questions There are 700 questions that will help you learn drill and review for the exam All of the questions in this section are mult
23. actice Exam B Quick Check Answer Key N N PO DM MDS DB YD YB YO KE 2 FS See Nasr FON BS SSH NSHT RESORT BH S A OS Sa gt VU Woo Q 0 gt 0 gt 0 0 FP 0 0 3 gt 0 0 3 gt 0 gt 0 0 70 0 gt 0 3 gt gt O and E 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 O O O gt gt O U O O O O QO DOU O O 0 gt 0 0 gt 0 0 gt 0 0 O gt gt gt and D 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 O O U P gt O Po PP P P 00 0 gt 00 DOD gt 0 gt 0 0 gt OUO DPU QOU and C and D B and D and D 63 64 Chapter 3 88 A 93 C 98 D 89 AandD 94 AandB 99 A 90 D 95 A 100 B 91 C 96 B 220 801 Practice Exam B 65 Answers and Explanations 1 Answer C If the computer fails to obtain an IP address from a DHCP server Windows will take over and apply an Automatic Private IP Address APIPA This address will be on the 169 254 0 0 network All of the other addresses could possibly be obtained from a DHCP server 172 16 10 10 is a Class B private IP 192 168 0 10 and 192 168 10 10 are Class C private IP addresses Answer A Case fans are measured in mm millimeters 80mm and especially 120mm are very common They are used to exhaust heat out of the case This aids in keeping the CPU and o
24. am Preparation Checklist 301 Tips for Taking the Real Exa 304 General Practices for Taking Exams 0000 304 Smart Methods for Difficult Questions 306 Wrapping Up the Exa 308 Beyond the CompTIA A Exam ooo 308 vi About the Author David L Prowse is an author a computer network specialist and a technical trainer Over the past several years he has authored several titles for Pearson Education including the well received CompTIA A Exam Cram and CompTIA Security Cert Guide As a consultant he installs and secures the latest in com puter and networking technology Over the past decade he has also taught CompTIA A Network and Security certification courses both in the class room and via the Internet He runs the website www davidlprowse com where he gladly answers questions from students and readers About the Technical Editor Aubrey Adams is an electronics and computer systems engineering lecturer and Cisco Networking Academy instructor at Central Institute of Technology in Perth Western Australia With a background in telecommunications qualifica tions in communications engineering and management and graduate diplomas in computing and education he teaches across a range of computer systems and networking vocational education and training areas Aubrey has authored Networking Academy curriculum and assessments and is a Cisco Press author and Pearson Education technical editor We Wa
25. as originally ratified by the IEEE as the 802 3 standard is a shared technology by default only one computer can communicate on the network at any given time However Ethernet switching alleviates this by segmenting computers and redirecting informa tion to other systems via MAC address Client Server is less a networking technology and more of a way that computers communicate it has a centralized server that con trols the network Answer B Single mode fiber optic cable can send data farther than any of the other answers up to hundreds of kilometers Multi mode fiber optic cable can send data about 600 meters STP is a type of twisted pair all twisted pair is limited to 100 meters or 328 feet Coaxial cable is limited to 200 or 500 meters depending on the type Answer C You should install a USB add on card This will give you more ports than the computer already has for use with peripherals Another option would be to pur chase a USB hub Modems network adapters and TV tuner cards all have their own purpose and do not allow additional peripherals Answer D 7200 RPM is a typical speed of a hard drive rotational speed that is Other common rotational speeds include 5400 RPM 10 000 RPM and 15 000 RPM 1000 Mbps is a common network data transfer rate SATA hard drives will commonly have a DTR of 3 Gb s 300 MB s or 6 Gb s 600 MB s 3 1 GHz is a common CPU frequency 8 GB might be the amount of RAM you install in a computer or t
26. at is not affected by electro magnetic interference EMI This is because it does not use copper wire or electricity but instead uses glass or plastic fibers and light Any copper cable will be susceptible to EMI to a certain degree Regular UTP cable such as Cat 5e or Cat 6 will be very sus ceptible Coaxial slightly less and shielded twisted pair STP even less than that STP is difficult to install and must be grounded because of these things it is found less commonly in networks To truly protect from EMI fiber optic is the best way to go Answer D Compressed air is safe However you might want to do this outside and vacuum up the left over residue Never disassemble the power supply It is called a field replaceable unit FRU for good reason Do not stick a vacuum cleaner inside a computer it could damage the components Do not spray any kind of solutions inside the computer this will damage the components 70 38 39 40 41 42 43 44 Chapter 3 Answer A Setting an admin password in the BIOS prevents a user from rearranging the boot order The idea behind this is to stop a person from attempting to boot off of an optical disc or USB flash drive As an administrator you should change the BIOS boot order to hard drive first Then apply an administrative also known as superviso ry password That Il stop em right in their tracks The admin password does not prevent any of the other listed answers To p
27. ce Exam B 59 Which of the following devices is the least likely to be replaced on a laptop O A O B O C O D CPU RAM PC Card Keyboard If your bandwidth is 1000 Mbps how many bits are you sending receiving Select the two best answers O A O B O C O D 100 000 000 bits per minute 1000 bits per second 1 000 000 000 bits per second 1 gigabit per second Which of the following is an example of a broadband connection O A O B O C O D Cable Internet Ethernet Client Server IEEE 802 3 Which of the following can send data the farthest O A O B O C O D Multi mode fiber Single mode fiber STP Coaxial You need to expand the peripherals of a computer but the system doesn t have enough ports Which type of card should you install O A O B O C O D Modem Network adapter USB card TV tuner card Which of the following is a typical speed of a SATA hard drive O A O B O C O D 1000 Mbps 3 1 GHz 8 GB 7200 RPM Quick Check Quick Answer 63 Detailed Answer 76 Quick Answer 63 Detailed Answer 76 Quick Answer 63 Detailed Answer 76 Quick Answer 63 Detailed Answer 76 Quick Answer 63 Detailed Answer 76 Quick Answer 63 Detailed Answer 76 60 87 88 89 90 Chapter 3 Which of the following should you use to clean a monitor s screen if you are not sure how to do so O A Isopropyl alcohol O B Mild dete
28. conversions Media Access Control addresses are usually not changed on a network adapter although they can be masked MAC filtering maintains a list of MAC addresses that are allowed to access a network but once again this is a different concept from DHCP Answer D The touchpad is the most likely of the listed devices Serial devices and the port in general are found less and less often on laptops They are extinct on new laptops PS 2 mice are also rare Both of these have given way to the touchpad and external USB mice Answer A The traditional hard drive is still the magnetic disk This is because it is well known and has a low cost per MB of storage space There are optical hard drives but they are rare optical drives are commonly implemented as CD DVD or Blu ray drives Impact refers to a type of printer such as the dot matrix or the daisy wheel printer Solid state hard drives are gaining in popularity because they have no moving parts are quiet and work as fast as if not faster than traditional magnetic hard drives However they are far more expensive than the traditional drive which slows their general acceptance 68 23 24 25 26 27 28 29 30 31 Chapter 3 Answer B RAM is more essential to the virtualization workstation than any of the other types of custom PCs listed Virtual operating systems virtual machines or VMs require a lot of RAM to run much more than any other applicati
29. country o C O D The computer is not usable in other countries Use a line conditioner for the correct voltage Check the voltage selector on the power supply What is an LCD display s contrast ratio defined as O A Power consumption O B Display resolution and brightness O C The darkest and lightest outputs O D Power savings Quick Check Quick Answer 63 Detailed Answer 70 Quick Answer 63 Detailed Answer 70 Quick Answer 63 Detailed Answer 70 Quick Answer 63 Detailed Answer 70 Quick Answer 63 Detailed Answer 70 Quick Answer 63 Detailed Answer 70 52 45 46 47 48 49 Chapter 3 Which of the following tools can protect you in the case of a surge O A Torx wrench O B Antistatic strap O C Voltmeter O D Antistatic mat What connector can have audio and video pass through it O A VGA O B RGB O C DVI O D HDMI While you are working on a computer at a customer s home the customer informs you that he needs to leave for about 10 minutes and that his 8 year old son can help you with anything if you need it What should you do O A Tell the customer to get back home as soon as possible O B Tell the customer that you are not responsible for the child O Tell the customer that an adult must be home while you work O D Tell the customer that the child must be removed Which device limits network broadcasts segments IP address ranges and
30. d with the CPU Answer D Recycle toner cartridges according to your company s policies and procedures or according to municipality rules and regulations Do not throw away or incinerate toner cartridges Although it is possible to refill toner cartridges it is not the recommended way to handle an empty cartridge because it is messy and time consuming Most companies simply purchase new toner cartridges Answer D To connect one computer to another directly by way of network adapter cards use a crossover cable That cable is designed to connect ke devices It is wired as 568B on one end and 568A on the other Those standards are ratified by the Telecommunications Industries Association Electronics Industries Association TIA EIA A regular and more common Cat 5e patch cable is known as a straight through cable It is used to connect unlike devices such as a computer to a switch Normally this is wired with the 568B standard on each end A parallel cable might be used to connect an older printer to a computer or an external hard drive to a SCSI 73 74 75 76 77 78 79 220 801 Practice Exam B 75 card IEEE 1394 cables are not used to connect computers to each other they are used to connect external hard drives to IEEE 1394 or FireWire ports Answer A Stay calm and do the job as efficiently as possible There isn t much you can do when a customer is upset except fix the problem I d be interested to see
31. des but not beep codes The beep codes come from the POST which happens before Windows boots Answer D Never spray any cleaner directly on a display Spray on a lint free cloth first and then wipe the display gently Try not to get any liquid in the cracks at the edge of the screen A lot of companies sell products that are half isopropyl alcohol and half water You could also make this yourself Again remember to put the solution on a lint free cloth first Answer D PCI Express PCle offers the highest video performance A PCle x16 version 3 card can transfer a maximum of 16 GB s Compare this to the closest competitor listed AGP which can do 2 133 MB s about 1 8 of PCle SCSI is used for hard drives and scanners among other things but not for video PCI is the prede cessor to PCle but is rarely used for video anymore it is limited to 133 or 266 MB s depending on the speed Either way it doesn t hold a candle to PCle Answer C The RJ45 jack enables a connection to a twisted pair most likely Ethernet network Printers with a built in RJ45 connector are network ready RJ11 ports are used by modems and dial up Internet connections If a printer has this then it is a multifunction printer acting as a fax machine USB is the standard port for a printer 66 10 11 12 13 14 15 Chapter 3 This allows it to connect to a PC or to a print server SCSI connectors are not often found on today s prin
32. e PC3 12800 just look at the number within the name and add MB s to the end To figure out the data transfer rate when given only the 1 0 bus clock speed for example 800 MHz multiply the clock speed by 2 and then multiply that number by 8 and solve for megabytes 800 MHzx2x8 12 800 MB s DDR3 800 has a peak transfer rate of 6 400 MB s it is also known as PC3 6400 There is no DDR2 1600 The fastest DDR2 standard is DDR2 1066 which has a peak transfer rate of 8 533 MB s DDR2 800 like DDR3 800 has a peak transfer rate of 6 400 MB s It is commonly sold as PC2 6400 Answer B The impact printer uses a print head ribbon and tractor feed An example of an impact printer is the dot matrix Laser printers are much more complex and use more parts Inkjet printers use a print head but use an ink cartridge instead of a ribbon and don t use a tractor feed Thermal printers use a print head and a special heating element Answer A If the CPU is running beyond the recommended voltage range for extend ed periods of time it can be a sign of a failing CPU It could also be caused by over clocking Check in the BIOS to see if the CPU is overclocked or not If the computer won t boot at all another problem might have occurred or the CPU might have already failed Low case temperatures are a good thing if they aren t below freezing and spyware is unrelated to this issue Answer C Fiber optic cable is the only answer listed th
33. e the following sister products to this book gt CompTIA A Exam Cram Sixth Edition by David L Prowse ISBN 978 07897497 10 gt CompTIA A Cert Guide Third Edition by Mark E Soper et al ISBN 978 0789749802 CHAP THREE 220 801 Practice Exam B Now let s kick it up a notch This second 220 801 exam could be considered an intermediate practice test PII be mixing in some more difficult questions this time Unlike the first exam this one is freestyle meaning the questions are randomized You can expect questions from any of the domains in any order Again the goal here is to make sure you understand all of the concepts before moving on to the next test If you didn t already I suggest taking a break between exams If you just completed the first exam give yourself a half hour or so before you begin this one If you didn t score 90 or higher on Exam A go back and study then retake Exam A until you pass with 90 or higher Write down your answers and check them against the answer key that immediately follows the exam After the answer key you will find explanations for all of the answers Good luck Chapter 3 Practice Questions Which of the following IP addresses would a technician see if a computer is connected to a multifunction network device and is attempting to obtain an IP address automatically but is not receiving an IP address from the DHCP server O A 172 16 10 10 O B 192 168 0 10 O C
34. eaning solution Use compressed air to remove the dust Setting an administrator password in the BIOS accomplishes which of the following O O O A B C D Prevents a user from rearranging the boot order Prevents a user from reading e mail Prevents a virus from infecting the MBR Prevents an attacker from opening the case Quick Check Quick Answer 63 Detailed Answer 69 Quick Answer 63 Detailed Answer 69 Quick Answer 63 Detailed Answer 69 Quick Answer 63 Detailed Answer 69 Quick Answer 63 Detailed Answer 69 Quick Answer 63 Detailed Answer 70 39 40 41 42 43 44 220 801 Practice Exam B 51 Which function is performed by the external power supply of a laptop O A O B O C O D Increases voltage Stores power Converts DC power to AC power Converts AC power to DC power Which type of cable has only two twisted pairs O A UTP O B POTS line O C Fiber O D Coaxial How many pins would you see in a high quality printhead on a dot matrix printer O A 24 O B 15 O C 8 O D 35 When it comes to computer case form factors which of the following provides the most room for effective cooling O A ATX O B BTX O C ITX O D microATX A co worker is traveling to Europe and is bringing her computer She asks you what safety concerns there might be What should you tell her O A B Check for a compatible power adapter for that
35. er cards sound cards and so on PCL stands for Printer Command Language developed by HP so a computer can properly communicate with dot matrix or thermal printers PnP stands for Plug n Play a Windows technology that allows devices to be located and installed automatically Answer C Any card named with a number followed by an x is most likely an AGP card 2x 4x 8x 16x AGP is the Accelerated Graphics Port usually a brown slot on the motherboard It is faster than PCI but slower than PCle PCI Express video cards PCle cards place the x before the number for example x16 pronounced by 16 AMR stands for Audio Modem Riser a small expansion slot developed by Intel to be used with sound cards and modems Answer B USB is the newest type of mouse connection It replaces PS 2 as today s standard Serial mice were used in the early 1990s and parallel was never really used for mice at all it was used for printers and SCSI connections Answers A B and D To reduce the chance of electrostatic discharge ESD use an antistatic wrist strap and mat Also consider raising the humidity The more humidity there is the less friction and ultimately less ESD Raising the temperature will have no effect Lowering the humidity increases the chances of ESD Working in a carpeted area will also increase the chance of ESD try to work in a non carpeted area You should also touch the chassis of the computer before handling any componen
36. etailed Answer 73 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 73 Quick Answer 63 Detailed Answer 74 56 66 67 68 69 70 Chapter 3 What maximum data transfer rate is IEEE 1394b capable of O O O O O A 400 Mbps 480 Mbps 800 Mbps m00y 12 Mbps 5 Gbps Which of the following is nota configuration that can be made in the BIOS A Temperature thresholds O O O O O moo w Boot sequence Overclocking Install drivers Intrusion detection Which of the following traits and port numbers are associated with POP3 O A O B O C O D Receives inbound e mail on port 110 Receives inbound e mail on port 25 Sends outbound e mail on port 110 Sends outbound e mail on port 25 When working on a computer which of the following should you disconnect to prevent electrical shock Select the two best answers O O O O oo UU D gt Printer Mouse Telephone cord Power cord Which of the following controls the connection between the CPU and the PCle x16 expansion slot O O Q A Northbridge B Power supply C D Memory controller Memory Quick Check Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 74 Quick Answer 63 Detailed Answer 74
37. ew Opportunities Growth Jobs Moses laere Competence ls noticed and Certifications qualify you for Hiring managers all organizations old valued in organizations new opportunities in your demand the a qualifies you for current job or when you strongest skill set Increasing want to change careers 79 of U S businesses Jobs in the high Increased knowledge of 31 report certification There is a widening report IT is either growth IT carcer field new or complex improved their career IT skilits gap with over important or very Increased compensation technologies advancement 300 000 jobs open Important tothe Chailenging assignments Enhanced productivity opportunities 88 report being rra and promotions More Insightful problem certified enhanced 60 report that being thelr resume certified is an employer or job requirement In a digital world digital literacy is an essential survival skill Certification proves you have the knowledge and skill to solve business problems in virtual ly any business environment Certifications are highly valued credentials that qualify you for jobs increased compensation and promotion Certification Advances Your Career The CompTIA A credential provides foundation level knowledge and skills necessary for a career in PC repair and support e Starting Salary CompTIA A Certified individuals can earn as much as 65 000 per year e Career Pathway CompTIA A is a building block
38. for other CompTIA certifications such as Network Security and vendor specific technologies e More than 850 000 Individuals worldwide are CompTIA A certified e Mandated Recommended by organizations worldwide Such as Cisco and HP and Ricoh the U S State Department and U S government contractors such as EDS General Dynamics and Northrop Grumman Some of the primary benefits individuals report from becoming A certified are e More efficient troubleshooting e Improved career advancement e More insightful problem solving CompTIA Career Pathway CompTIA offers a number of credentials that form a foundation for your career in technology and allows you to pursue specific areas of concentration Depending on the path you choose to take CompTIA certifications help you build upon your skills and knowledge supporting learn ing throughout your entire career Grow your IT Career from Beginner to Expert CompTIA Advanced Security Practitioner CASP Storage Architect tuture certification MPpTIA Mastery Certification Advanced Mobility future certification Wo advanced IT professionals Virtualization advenced Cloud future certification Linux Security Powered by LPI Servere A pe OMPTIA Professional Certification Plot Storage for IT professionals with PDI Powered by SNIA some experience Project Cloud Essentials Green IT cialty Certification Healthcare IT Technician n IT for Sales ind If professionals Mobilit or
39. g Tips eesis eines nigas ene tee nop eee bag pe beget 127 Getting Ready for the Practice Tests 0 0 0 0 128 Chapter 7 220 802 Practice EXam A ocoourvinrarsrsir prior ds teks 129 Practice QUESTIONS rirretieta datada daba ad 130 Domain 1 0 Operating Systems 00 0 0 0000000004 130 Domain 2 0 Security ooo 136 Domain 3 0 Mobile Devices 140 Domain 4 0 Troubleshooting oooooooccccccccoo 142 Quick Check Answer Key 150 Answers and Explanations o aaaea 152 Domain 1 0 Operating Systems aoaaa aaa 152 Domain 2 0 Security i pei creriariri cest eee 156 Domain 3 0 Mobile Devices 00an aaa 159 Domain 4 0 Troubleshooting 0 a aasa 160 Chapter 8 220 802 Practice Exam B 165 Practice Questions sink b cas seg ae a aa AS ea 166 Quick Check Answer Key 187 Answers and Explanations a a o aeaaaee 189 Chapter 9 220 802 Practice ExaMC o ooo 205 Practice Questions 250 a eae Dees 206 Quick Check Answer Key 228 Answers and Explanations o ae aaea 230 Chapter 10 220 802 Practice Exam D 0 249 Practice Questions iia e enO ow A ae iaa 250 Quick Check Answer Key 277 Answers and Explanations aaaea aea 279 Chapter 11 Review of the 220 802 Exam 297 Review of the Domains ooo 297 Review What You Know ouaaa aaua 298 More Test Taking Tips 000 299 Taking the Real Exa 299 Chapter 12 Wrap Up compitan A aa E Aa a i eE AEA 301 Getting Ready and the Ex
40. g fans or using a liquid cooling system It isn t quite possible to add cache to a hard drive the cache on most hard drives is hardwired and there are no locations to add more Increasing RAM does not necessarily increase the pagefile and regardless this won t prevent problems with a hard drive over the short term but it can make the hard drive work more efficiently A second hard drive should be treated as a completely separate device However installing the OS to one drive and storing data on the second drive can go a long way to making both drives last longer Answer A Power surges can cause the inverter to short out after which the cold cathode fluorescent lamps CCFL cannot get any power You need to open the LCD panel to replace the inverter in this case Answer B When testing the main 24 pin ATX power connector that leads from the power supply to the motherboard use a multimeter It can test each individual wire s voltage Better yet use a power supply unit PSU tester This tests them all in one shot A Torx wrench is used to open computers and laptops that have special Torx screws T 10 is a common size A receptacle tester is used to test an AC outlet although multimeters can be used for that as well A tone and probe kit is used to test telephone and network connections for continuity However it can test only one pair of the wires in the cable For better results when testing network cables use a proper network cable te
41. he information provided is on an as is basis The author and the publisher shall have neither liability nor responsibility to any person or entity with respect to any loss or damages arising from the information con tained in this book or from the use of the CD or programs accompanying it Bulk Sales Pearson IT Certification offers excellent discounts on this book when ordered in quanti ty for bulk purchases or special sales For more information please contact U S Corporate and Government Sales 1 800 382 3419 corpsales pearsontechgroup com For sales outside of the U S please contact International Sales international pearsoned com Associate Publisher Dave Dusthimer Acquisitions Editor Betsy Brown Development Editor Box Twelve Communications Inc Managing Editor Sandra Schroeder Project Editor Mandie Frank Copy Editor Megan Wade Proofreader Leslie Joseph Technical Editor Aubrey Adams Editorial Assistant Vanessa Evans Media Producer Tim Warner Interior Designer Gary Adair Cover Designer Gary Adair Compositor Studio Galou LLC Table of Contents Introduction ioe 3crt oer cias tar da hee tanta e yaaa hey saad 1 Chapter 1 Introduction to the 220 801 Exam ee 3 Exam Breakdown 0000 e cece cece eeee 3 Domain 1 0 PC Hardware 40 ooo 4 Domain 2 0 Networking 27 oaas aaa 4 Domain 3 0 Laptops 11 0 0 00 eee 5 Domain 4 0 Printers 11 0 000 5 Domain
42. he network number it can not be used by a host Otherwise if the address was say 169 254 0 1 the address would work but because it is an APIPA address it would be able to communicate only with other systems using APIPA addresses 255 10 15 7 is not valid That address is within the Class E reserved range Normal host IP addresses first octet will either be between 1 and 126 or 128 and 223 but not between 224 and 255 Answer B When data is flowing through the activity light it should blink or flash rap idly in an erratic fashion You see solid green 1000 Mbps or 100 Mbps or yellow 10 Mbps on the link light if there is a separate link light If it is unlit the cable is not connected properly or the device is malfunctioning Answer C Dynamic Random Access Memory DRAM is the modules or sticks of memory that you can install into a motherboard SDRAM DDR DDR2 and DDR3 are all examples of DRAM The complementary metal oxide semiconductor CMOS is a chip that is soldered onto the motherboard that works in conjunction with the Basic Input Output System another chip soldered on to the motherboard Static RAM SRAM is memory that is nonvolatile as opposed to DRAM it is also soldered to the circuit board Read Only Memory ROM is usually not serviceable The BIOS resides on a ROM chip more specifically an electrically erasable programmable ROM EEP ROM chip Answer C Turning the printer off might not be enough It migh
43. he size of a USB flash drive Answer C If you are not sure about what to clean a screen with use water Water will most likely not damage the screen However if the user manual for the monitor calls for it you might see that you can use a half and half mixture of water and isopropyl alcohol Do not use detergents on a screen they are okay for the outside of a comput er case but not the display And boric acid would just be plain silly and dangerous 88 89 90 91 92 93 94 95 220 801 Practice Exam B 77 Answer A A switch interconnects devices on the same network so that they can com municate whereas a router interconnects one or more networks Remember that the switch is in charge of connecting devices on the LAN But the router is in charge of connecting the LAN to another LAN to the Internet or to both Multifunction network devices make matters confusing they combine the functionality of a switch a router a wireless access point and a firewall Physically the four port section of the device is the switch portion and the single port that leads to the Internet is the router portion Answers A and D Internal SATA drives connect to the motherboard or SATA card via a 7 pin data cable and a 15 pin power cable PATA IDE hard drives use a 40 pin data cable and 4 pin Molex power cable Who is Ray He s just another fictitious character in this book You ll hear more about him later Answer D In
44. icient method switches are preferred Switches send information to specific network devices based on their MAC addresses A firewall will inspect traffic and allow or deny it access to the network Intrusion detection systems IDSs and intrusion pre vention systems IPSs can also do this but in a more intelligent manner A router will determine the best route for data 74 65 66 67 68 69 70 71 72 Chapter 3 Answers A and C A receptacle tester and multimeter can be used with caution to test an AC outlet A power supply PSU tester is used to test the main P1 power connection and possibly other connections of a power supply There are various loopback plugs for testing ports on the back of a PC for example the RJ45 loopback plug but these have nothing to do with testing an AC outlet Answer D IEEE 1394b is capable of 800 Mbps Newer versions of IEEE 1394b can support 3 200 Mbps but an IEEE 1394b port on a computer will often allow only a maximum of 800 Mbps 12 Mbps is the data transfer rate of USB 1 1 Full Speed 400 Mbps is the speed of IEEE 1394a 480 Mbps is the speed of USB 2 0 5 Gbps is the speed of USB 3 0 Answer D You cannot install drivers to the BIOS Drivers are software that allows the operating system to communicate with hardware they can be configured in the Device Manager in Windows The rest of the answers can be configured in the BIOS The boot sequence also known as boot prior
45. icles related to IT and IT careers Content Seal of Quality This courseware bears the seal of CompTIA Approved Quality Content This seal signifies this content covers 100 of the exam objectives and imple ments important instructional design principles CompTIA recommends multiple learning tools to help increase coverage of the learning objectives Why CompTIA e Global Recognition CompTIA is recognized globally as the leading IT non profit trade association and has enormous credibility Plus CompTIA s certifications are vendor neutral and offer proof of foundational knowledge that translates across technologies Valued by Hiring Managers Hiring managers value CompTIA certification because it is vendor and technology independent validation of your technical skills Recommended or Required by Government and Businesses Many government organizations and corporations either recommend or require technical staff to be CompTIA certified For example Dell Sharp Ricoh the U S Department of Defense and many more Three CompTIA Certifications ranked in the top 10 In a study by DICE of 17 000 technology professionals certifications helped command higher salaries at all experience levels How to obtain more information Visit CompTIA online www comptia org to learn more about getting CompTIA certified Contact CompTIA Call 866 835 8020 ext 5 or email questions comptia org Connect with us E Fi g e Introduction
46. interconnects different physical media O A Switch O B WAP O C Firewall O D Router You just upgraded the CPU Which of the following can make your computer shut down automatically after a few minutes Select the best answer A Wrong CPU driver B Wrong voltage to the CPU C Incorrect CPU has been installed D The CPU has overheated O O OQ Quick Check Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 71 50 51 52 53 54 220 801 Practice Exam B 53 Which of the following power connections might be used by hard drives Select the two best answers O A 8 pin O B 7 pin O Molex O D 15 pin O E Berg Which of the following is a valid IPv4 address for a network host O A 127 0 0 1 O B 169 254 0 0 16 O 172 17 58 254 O D 255 10 15 7 If a lot of data is flowing through a network card what should the activity light look like O A Unlit O B Rapid erratic flashing O C Solid green O D Solid yellow You want to upgrade memory in your computer Which of the fol lowing is user replaceable memory in a PC O A CMOS O B BIOS O C DRAM O D SRAM O E ROM You are working on a very old printer and it starts to smoke What should you do A Turn off the printer Call 911 Unplug the printer Call mai
47. iple choice gt Quick Check Answer Key After you have finished answering the questions you can quickly grade your exam from this section Only cor rect answers are given in this section No explanations are offered yet Even if you have answered a question incorrectly do not be discouraged Keep in mind that this is not the real exam You can always review the topic and do the questions again 2 CompTIA 220 801 and 220 802 Practice Questions Exam Cram gt Answers and Explanations This section provides you with correct answers as well as further explanations about the content posed in that question Use this information to learn why an answer is correct and to reinforce the content in your mind for the exam day The book also comes with a supplemental disc It contains a simulated testing environment where you can take all seven exams on the computer in study mode or in full practice test mode Hints for Using This Book Complete your exams on a separate piece of paper so that you can reuse the practice questions again if necessary Also plan to score 90 or higher on each exam before moving on to the next one The higher percentages you score on practice question products the better your chances for passing the real exam I am available for questions at my website www davidlprowse com I answer questions Monday through Friday usually in the mornings Need Further Study Consider a hands on A course and be sure to se
48. ity or boot order allows you to select which device will be booted off of first hard drive is the most secure Temperature thresh olds allow you to set alerts and possibly shut down the system if the CPU runs too hot Overclocking is when the CPU s voltage is raised and the speed is increased Overclocking is not recommended but if you do configure it you should set tempera ture thresholds Intrusion detection can be enabled and will log if a person opened the computer case Answer A POP3 is the protocol used by e mail clients to receive e mail It makes use of Port 110 SMTP is used by e mail clients to send e mail It uses port 25 Answers C and D The power cord carries 120 volts at 15 amps or 20 amps and the telephone cord carries 80 volts when it rings It is important to disconnect these before servicing a computer Now if you were opening the computer you would disconnect everything However you might be fixing something that doesn t require you to open the computer for example connecting a network cable Remember to always discon nect any power data or telecommunications cables before working on the system Answer A The northbridge takes care of the connections between the CPU and the PCI Express PCle x16 expansion slot On older Intel systems and AMD systems the northbridge is the first of a pair of chips in the chipset the other is the southbridge On newer Intel systems the northbridge functionality is combine
49. ly refers to a chip on a circuit board that is not removable Compact Flash comes in varying sizes all greater than 1 44 MB and is considered a card not a disk Answer A 802 11a operates at 5 GHz only 802 11b and g operate at 2 4 GHz 802 11n operates at either 2 4 or 5 GHz The IEEE 802 11 wireless standards are 32 33 34 35 36 37 220 801 Practice Exam B 69 collectively known as 802 11x There is no actual 802 11x standard it was not used in order to avoid confusion 802 11x is instead a variable that you will sometimes see that refers to two or more 802 11 technologies Answer C IEEE 1394 is the PC equivalent of FireWire FireWire was originally devel oped by Apple and although the two names are often used interchangeably the PC standard is IEEE 1394 USB is the Universal Serial Bus a similar standard but with a different architecture and data transfer rate IEEE 1284 is an older parallel PC standard for printer cables and connections ISA is the Industry Standard Architecture a legacy 16 bit adapter card slot Answer C DDR3 1600 has a peak transfer rate of 12 800 MB s It runs at an I O bus clock speed of 800 MHz and can send 1600 megatransfers per second MT s It is also known as PC3 12800 To figure out the data transfer rate of DDR3 from the name DDR3 1600 simply multiply the 1600 by 8 bytes and solve for megabytes 12 800 MB s To figure out the data transfer rate of DDR3 by the consumer nam
50. necessarily supported by all routers Some routers still only support IPv4 IPv6 is a logical concept The physical cable that connects to the computer has no bearing over which IP version is used Answer B 60 Celsius is a typical operating temperature for CPUs such as the Core i5 or Phenom II The operating range may be above or below that However 72 Celsius becomes less typical 60 Fahrenheit is equal to 15 5 Celsius A processor will not run that cold but it would be pretty efficient if it did 72 Fahrenheit is excellent room temperature and is what you should set the room temperature for computers to run at their best Answer A The impact printer technology is what you want This strikes the ribbon and consequently the paper with a printhead The physical hammering action causes the carbon backing to take effect and apply text to the next layer of paper Multipart forms such as these are commonly used for receipts Laser printers can print to spe cial multipart forms but not ones with carbon backing Answer B Dual channel memory combines two sticks of RAM into a bank that is 128 bit Single channel memory is 64 bit 256 bit is a common bit length used by the Advanced Encryption Standard AES 448 bit memory bus width is used by some video cards These types of video cards have much faster RAM access than mother boards do Answer C A hub broadcasts data to all network devices connected to it Because of this ineff
51. normal operating range is called O A O B o C O D Overclocking Overdriving Overpowering Overspeeding Which port is typically known as a serial port O A O B O C O D DVI COM1 LPT1 SCSI What is the most important piece of information needed to connect to a specific wireless network O A O B O C O D Channel MAC address SSID Administrator password Quick Check Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 66 Quick Answer 63 Detailed Answer 67 17 Which password is used in the BIOS CMOS to prevent end users 220 801 Practice Exam B 47 from accessing the BIOS contents O A O B O C O D Supervisor User Administrator Local 18 Why would the display on a laptop get dimmer when the power supply from the AC outlet is disconnected O A O B O C O OD The laptop cannot use full brightness when on battery power Power management settings on the laptop To operate properly laptop displays require an alternating current power source Security settings on the laptop 19 Which tool should always be used when working on the inside of the computer O A O B O C O D Cordless drill Antistatic strap Multimeter Screwdriver 20 What are advantages of using the Dynamic Host Configuration Protocol DHCP Select the two best answers
52. nt to Hear from You As the reader of this book you are our most important critic and commentator We value your opinion and want to know what we re doing right what we could do better what areas you d like to see us publish in and any other words of wis dom you re willing to pass our way As an associate publisher for Pearson IT Certification I welcome your com ments You can email or write me directly to let me know what you did or did n t like about this book as well as what we can do to make our books better Please note that I cannot help you with technical problems related to the topic of this book We do have a User Services group however where I will forward specific technical questions related to the book When you write please be sure to include this book s title and author as well as your name email address and phone number I will carefully review your com ments and share them with the author and editors who worked on the book Email feedback pearsonitcertification com Mail David Dusthimer Associate Publisher Pearson IT Certification 800 East 96th Street Indianapolis IN 46240 USA Reader Services Visit our website and register this book at www pearsonitcertification com for convenient access to any updates downloads or errata that might be available for this book viii ComplTlA It Pays to Get Certified IT Knowledge and High Pay High IT is Everywhere Skills Get Jobs Job Retention N
53. ntenance Tell the printer it is bad to smoke 00000 moo w Quick Check Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 71 Quick Answer 63 Detailed Answer 72 Quick Answer 63 Detailed Answer 72 Quick Answer 63 Detailed Answer 72 54 55 56 57 58 59 60 Chapter 3 Which technology has the fastest data transfer rate O O O O A B C D 802 11a 802 11b 802 119 802 11n You are asked to fix a problem with a customer s domain controller that is outside the scope of your knowledge What action should you take O O O O A B Learn on the job by trying to fix the problem Tell the customer that the problem should be reported to another technician Assure the customer that the problem will be fixed very soon Help the customer find the appropriate channels to fix the problem Of the following which IP address is private O O O O A B C D 11 58 254 169 169 255 10 41 172 31 1 1 192 169 0 1 How should you remain in the face of adversity O O O O A B C D Wavering Decisive Positive Certain What is the local loopback IPv6 address O O O O A B C D 127 0 0 1 1 192 168 0 0 FE80 10 Which of the following statements is correct concerning IPv6 addresses O A They cannot be used with IPv4 OB They are supported by all routers
54. on Plus a virtualiza tion workstation will often have more than one virtual machine running increasing its need for RAM even further Gaming PCs biggest requirements are CPU and video card Audio video workstations require specialized audio and video cards fast hard drives and dual monitors Home theater PCs HTPCs require an HDMI output surround sound a small form factor and possibly a TV tuner Answer D Paper feed errors are often caused by the pickup rollers which are in charge of feeding the paper into the printer If a separation tab fails it might cause more than one sheet of paper to be entered into the printer The developing rollers transfer ink to the imaging drum The paper tray simply holds the paper It should not cause paper feed errors unless the constraining tabs are too tight Answer D Port 443 is the default port for Hypertext Transfer Protocol Secure HTTPS This is the protocol used during online banking sessions or if you go to checkout when shopping online Port 25 is the default port for SMTP Port 80 is HTTP Port 143 is the Internet Message Access Protocol IMAP it s similar to POP3 but offers offline operation and multiple clients can access the same mailbox Answer B Class 2 Bluetooth devices have a maximum range of approximately 10 meters Class 2 devices are the most common for example Bluetooth headsets Class 1 has a 100 meter range and Class 3 s range is approximately 1 meter The maximum
55. or Macs Which format should you select O A AAC O B WMA O C MP3 O D MOV You need to replace and upgrade the memory card in a smartphone Which type of memory does the smartphone most likely use O A SSD O B CF O C USB flash drive O D SD Your organization relies heavily on its server farm for resources and is less reliant on the client computers Which type of client computer does the organization most likely use O A O B Client Server O C Thin client O D Thick client Virtualization workstation What are the respective functions of the two corona wires in a laser printer Select the two best answers O A O B Transfer toner from the drum to the paper o C O D Condition the drum to be written to Fuse the toner to the paper Clean the drum Which of the following capabilities enables a printer to store multiple documents A Buffer B Print driver C Printer pool D O O Spooling Quick Check Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 62 96 97 98 99 100 Chapter 3 Quick Check While you explain a technical concept to a customer what is the Quick Answer 64 best action for you to take Detailed Answer 78 O A Recommend a training class O B Sit next to the custome
56. ormation they require comes from a server Thin clients normally have no hard drive this is why they are referred to as diskless workstations Virtualization workstations definitely need a hard drive and require lots of other resources they are not as dependent on servers Client server is a type of networking organizational tech nique However thin clients will often log in to a server Thick clients are for the most part PCs the typical desktop computer Answers A and B Know the six main steps of laser printing Cleaning charging writ ing also known as exposing developing transferring and fusing In the charging step the drum is conditioned charged by the primary corona wire negatively charging it and prepared for writing In the transferring step the paper is positively charged by the transfer corona wire preparing it to accept the toner from the drum Answer A The printer has RAM which acts as a buffer if you or others send multiple documents to it It prints them one at a time according to which job entered the queue first Don t confuse the printer s buffer with the spooler that exists on the hard drive of 78 96 97 98 99 100 Chapter 3 the computer that controls the printer The print driver is the software you install so that Windows can talk to the printer properly it needs to be the exact driver A print er pool is a group of printers often identical that share the duties of printing
57. r O C Use acronyms so that the customer feels comfortable about your knowledge O D Tell the customer to read the manual You are setting up a SOHO network with DSL Which of the Quick Answer 64 following devices should you place on the phone line so that Detailed Answer 78 the line can be shared with a phone and the DSL modem O A Line filter O B Heat sink O C Router O D Coax splitter One way to provide preventive maintenance to a hard drive is to Quick Answer 64 do what Detailed Answer 78 O A Upgrade the cache on the drive to improve performance B Increase the amount of RAM on the PC to increase the page file O O C Install a second hard drive O D Keep an area of airflow around the drive so that it doesn t overheat After a blackout the power comes back on causing a surge to Quick Answer 64 occur on all the computers and equipment in the office Your Detailed Answer 78 co worker s laptop display doesn t come on However if you look closely at the display you can see that Windows is running but very dimly What could be the cause of this problem O A The inverter has been shorted out O B The power supply has failed O C The display is not getting power D The display driver has failed Which tool would you use to test a 24 pin ATX 12v power Quick Answer 64 connector Detailed Answer 78 O A Torx wrench O B Multimeter O C Receptacle tester O D Tone and probe kit 220 801 Pr
58. revent a user from reading e mail you would have to remove e mail applications such as Outlook and probably take away the browser too Doesn t sound feasible To prevent a virus from infecting the MBR you could turn on boot sector scanning in the BIOS if the motherboard supports it To prevent an attacker from opening the case use a case lock To find out if someone attempted to get into the computer itself turn on the chassis intrusion alert in the BIOS Answer D The external power supply of the laptop converts AC to DC for the system to use and for charging the battery lt is known as the power adapter and it needs to run at a very specific voltage In fact different make and model power adapters will usually not work with different laptops even if the voltages are only slightly different The adapter does not store power that is the responsibility of the laptop battery It is also accomplished by a UPS though you probably wouldn t lug one of those around with your laptop while travelling Answer B The plain old telephone service POTS line has two twisted pairs of copper wire for a total of four wires It is used for telephone landlines Unshielded twisted pair UTP has four pairs eight wires total Fiber optic cable has a single glass or plastic core that sends light Coaxial has a single core of copper Answer A High quality dot matrix printheads can come in 9 18 or 24 pins with 24 being the highest quality Answer
59. rgent O C Water O D Boric acid Which of the following best describes the differences between a switch and a router O A A switch interconnects devices on the same network so that they can communicate whereas a router interconnects one or more networks OB A router broadcasts all data packets that are sent on the network and a switch transmits data directly to the device O C A switch broadcasts all data packets that are sent on the network and a router transmits data directly to the device O D A switch interconnects one or more networks whereas a router interconnect devices on a network Ray wants to install a new internal SATA hard drive in his comput er Which types of cables should he connect to the drive Select the two best answers O A 7 pin data cable O B 40 pin data cable O C 4 pin power cable O D 15 pin power cable A group of users in ABC Corp needs to back up several gigabytes of data daily Which of the following is the best media for this scenario A DVD B Dual Layer DVD C External USB hard drive D DLT 0000 Quick Check Quick Answer 63 Detailed Answer 76 Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 Quick Answer 64 Detailed Answer 77 91 92 93 94 95 220 801 Practice Exam B 61 You are required to rip the contents of a CD to a compressed file format that can be read easily on PCs Linux computers
60. s part of a router s job when connecting two or more networks It is also used with different media For example you might have a LAN that uses twisted pair cable but the router connects to the Internet via a fiber optic connection That one router will have ports for both types of connections A switch connects multiple computers together on the LAN it does not limit IP based network broadcasts However the switch does not segment by IP address it communicates with computers and segments the network via MAC addresses Also the switch will normally use one type of media twisted pair connecting to RJ45 ports However it is possible that the switch might connect to another switch by way of a specialized fiber optic connector A wireless access point WAP connects the computers on the wireless LAN WLAN It often has only one connection a single RJ45 port A hard ware based firewall will usually connect to the network via RJ45 regardless it will have only one or only a few connections It doesn t deal with routing or broadcasts instead it prevents intrusion to a network Answer D The CPU could overheat if thermal compound has not been applied correctly common or if it is not seated properly rare As part of the boot process power needs to verify the CPU If the wrong voltage is running to the CPU the system won t even boot If an incorrect CPU has been installed the system will probably not boot especially if the BIOS doesn
61. sting kit Testing tools are a key ingredient in a computer technician s toolkit
62. t be seriously malfunc tioning so pull the plug Dialing 911 is not necessary unless a fire has started Wait at least 15 minutes before opening the printer to see what caused the smoke Printer power supplies can fail just like a PC s power supply can In fact a laser printer power supply does more work because it needs to convert for high voltages in the 600 V range If you have a maintenance contract with a printer company and the printer is under warranty or contained in the service contract you could call the maintenance company to fix the problem Be ready to give a detailed account of exactly what hap pened You could tell the printer that it is bad to smoke but that would be belligerent and would probably show that you have been working too hard Answer D Of the listed answers 802 11n has the fastest data transfer rate at a maxi mum of 600 Mbps However to achieve this you need to have the right wireless access point configured properly with client computers that are also compatible with the 802 11n standard 802 11a and g have a maximum DTR of 54 Mbps 802 11b has a maximum of 11 Mbps Answer D Make sure that the customer has a path toward a solution before dismiss ing the issue Do not try to fix the problem if the scope of work is outside your knowl edge Most PC technicians will not work on domain controllers because they are advanced Microsoft servers that are used in client server networks 57 58 59 60
63. t recognize it Finally the CPU doesn t use a driver instead the BIOS recognizes it or doesn t if it needs a BIOS update and passes that information to the operating system Answers C and D Molex power connectors are used by IDE drives 15 pin power connectors are used for SATA drives 8 pin power connectors are used by high end PCI Express video cards There are several types of 7 pin connectors such as SATA data and S Video but 7 pin power connections are less common Berg is the power connector for floppy drives Okay we are halfway through the exam Take a deep breath then continue on with power Pun intended Answer C Of the answers listed 172 17 58 254 is the only valid IPv4 address for a network host A host on the network is any computer or network device that uses an IP address to communicate with other computers or devices hosts 172 17 58 254 is 72 52 53 54 55 56 Chapter 3 a Class B private IP address so it fits the description of a valid IPv4 address for a network host 127 0 0 1 is the local loopback address Every computer using TCP IP gets this address it is used for testing It cannot be used to communicate with other hosts on the network 169 254 0 0 16 means an IP address of 169 254 0 0 with a default subnet mask of 255 255 0 0 indicating the network number is 169 254 It is not a valid host IP address because it ends in 0 0 The first IP address of a network is always reserved for t
64. ters regardless they would indicate a local connection not a network connection Answer A The fuser heats paper to around 400 Fahrenheit 204 Celsius That s like an oven If you need to replace the fuser let the printer sit for 10 or 15 minutes after shutting it down and before maintenance The fuser is not wet or fragile and it does not contain toner that is contained by the cartridge Answer C On Core 2 Duo Quad and Extreme systems the memory controller is located within the chipset and is known as the Memory Controller Hub MCH by Intel but it is also referred to as the northbridge On AMD systems and newer Intel systems such as the Core i5 or i7 the memory controller is located on die meaning within the CPU Answer A The Musical Instrument Digital Interface MIDI connector is used for musical equipment such as keyboards synthesizers and sequencers MIDI is used to create a clocking signal that all devices can synchronize to The other three connec tors HDMI DVI and DisplayPort are all video connectors Answer B The Torx wrench is a special tool used to remove screws from the outside of a case often proprietary computer manufacturers will use these screws It can also be used to remove screws albeit smaller ones from a laptop The standard is the size T 10 Torx wrench But you might also use a T 8 and even a T 6 on laptops Answer C If you want to access more than 4 GB of RAM you will need a
65. ther devices cool CPUs commonly use a heat sink fan combination However the two are often connected together Memory modules don t use fans but they can be equipped or purchased with heat sinks of their own Answer B An IEEE 1394 FireWire chain can have up to 63 devices USB can handle up to 127 devices though both of these numbers are outside the realm of normalcy for most individuals 15 is the maximum amount of devices that can be on a SCSI chain Remember this doesn t count the SCSI card 255 is a commonly used number when it comes to maximums but doesn t apply to IEEE 1394 Answer A If you see a yellow exclamation point in the Device Manager this indicates that the device does not have a proper driver If the device is disabled it will have either a down arrow for Windows 7 Vista or a red x Windows XP If a driver was not digitally signed the device might show up in the Unknown devices category until it is installed properly If a device has a working driver then upgrading it will be up to you but you won t necessarily be notified of this Answer C As the POST checks all the components of the computer it may present its findings on the screen or in the form of beep codes The complementary metal oxide semiconductor CMOS stores information such as time and date and BIOS passwords RTC stands for real time clock it is the device that keeps time on the motherboard Windows generates all kinds of error co
66. ts In addition place components in antistatic bags when they are not in use 76 80 81 82 83 84 85 86 87 Chapter 3 Answer A A dual core processor has two cores with separate caches on the same physical chip A processor with several cores would be known as multi core quad core or hex core Dual core processors are generally more efficient than older single core processors and often use less voltage A dual core processor does not require more RAM than a single core but it usually requires more cache memory Every core of a multi core CPU has its own L1 and L2 cache Answer A The CPU is the least likely to be replaced You would probably need to replace other equipment too in this case Just like PCs though the CPU should rarely fail However you might upgrade replace or add to RAM PC Cards PCMCIA are commonly implemented as network adapters modems and more It is common to install and remove PC Cards Laptop keyboards fall victim to coffee overuse and other damage over time and sometimes need to be replaced Answers C and D 1000 Mbps is 1000 megabits per second otherwise notated as 1 000 000 000 bits per second or 1 gigabit per second Answer A Cable Internet is a broadband connection It uses multiple channels to transmit and receive information All the rest of the examples are technologies that are or use a baseband connection one channel on the media Ethernet which w

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CompTIA® A+ 220-801 and 220-802: Authorized