Exam, Guide to - Andrews, Joy Dark, Jill West (Solution Manual a...

CompTIA A+ Core 1 Exam, Guide to Computing Infrastructure, 10e Jean Andrews, Joy Dark, Jill West

(Solution Manual all Chapters)

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Chapter 1, A+ Guide to IT Tech Support (ISBN 978-0357108291) 1

Solutions for Chapter 1: Taking a Computer Apart and Putting It Back

Together

CompTIA A+ Core 1 Exam: Guide to Computing Infrastructure (10th

Edition) [EOC A HD] Thinking Critically

• You purchase a new desktop computer that does not have wireless capability, and

then you decide that you want to use a wireless connection to the Internet. What are the two least expensive ways (choose two) to upgrade your system to wireless?

• Trade in the computer for another computer that has wireless installed.
• Purchase a second computer that has wireless capability.
• Purchase a wireless expansion card and install it in your system.
• Purchase a USB wireless adapter and connect it to the computer by way of a USB

port.

Answers:

• Purchase a wireless expansion card and install it in your system.
• Purchase a USB wireless adapter and connect it to the computer by way of a USB port.
• What type of computer is likely to use SO-DIMMs, have an internal power supply,

and use a desktop processor socket?

Answer: An all-in-one computer. 2 / 4

Chapter 1, A+ Guide to IT Tech Support (ISBN 978-0357108291) 2

• When troubleshooting a computer hardware problem, which tool might help with

each of the following problems?

• You suspect the network port on a computer is not functioning.
• The system fails at the beginning of the boot and nothing appears on the screen.
• A hard drive is not working and you suspect the Molex power connector from the

power supply might be the source of the problem.

Answers:

• Loopback plug
• POST diagnostic card
• Multimeter
• You disassemble and reassemble a desktop computer. When you first turn it on, you

see no lights and hear no sounds. Nothing appears on the monitor screen. What is the most likely cause of the problem? Explain your answer.

• A memory module is not seated properly in a memory slot.
• You forgot to plug in the monitor’s external power cord.
• A wire in the case is obstructing a fan.
• Power cords to the motherboard are not connected.

Answer: d. Power cords to the motherboard are not connected. All the other answers would still cause the system to start the boot, even though it might fail. If the motherboard is not getting power, it will not start the boot.

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Chapter 1, A+ Guide to IT Tech Support (ISBN 978-0357108291) 3

• You are looking to buy a laptop on a budget that requires you to service and repair the

laptop yourself, and you want to save money by not purchasing an extended service agreement beyond the first year. To limit your search, what should you consider when choosing manufacturers? Which manufacturers would you choose and why?Answer: You want to be able to maintain and repair the laptop on your own after the warranty expires. You will need access to documentation and new parts. Consider that two manufacturers, Lenovo and Dell, provide their service manuals online free of charge.They also provide documentation about how their laptops are disassembled and options to purchase proprietary parts without first being an authorized service center.

• A four-year-old laptop will not boot and presents error messages on screen. You have

verified with the laptop technical support that these error messages indicate the motherboard has failed and needs replacing. What is the order of steps you should take to prepare for the repair?

• Ask yourself if replacing the motherboard will cost more than purchasing a new

laptop.

• Find a replacement motherboard.
• Find the service manual to show you how to replace the motherboard.
• Ask yourself if the laptop is still under warranty.

Answers: The correct order of steps to take is d., a., c., and b.

• Why are laptops usually more expensive than desktop computers with comparable

power and features?

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