Chapter 1

what is the component called that usually has a dual-voltage selector switch and has cables that connect to the motherboard and internal components?

PSU

What is the very first step that should be taken when performing work with a computer?

You should back up any important data

When handling motherboards, cards, or drives, which statement is NOT accurate?

You should not hold expansion cards by the edges

How many pins are in the power supply connector that is typically used on most motherboards today?

24- pin

Sometimes an expansion board may have an extra PCIe power connector. This connector comes in what two different pin configurations?

6-pin 8-pin

How many pins are used in a serial port?

9

You are troubleshooting a laptop with multiple sticking keys that result in misspelled words while the user types. Other than several sticking keys, the laptop appears to be functioning properly. You have cleaned the keyboard with compressed air, but the problem persist. After removing one of the keys tops, it becomes apparent that a liquid was spilled into the keyboard.

Clean the keyboard keys with a contact cleaner

What acronym is another name for static electricity, which can damage chips and destroy motherboards?

ESD

A user called to inform you that the laptop she purchased yesterday is malfunctioning and will not connect to her wireless network. You personally checked to verify that the wireless worked properly before the user left your office. The user states she rebooted the computer several times but the problem still persists.

Have the user press the appropriate function key combination to enable the wireless radio and then attempt to connect to the wireless network.

which component may be considered a field replaceable unit or FRU?

LCD screen Power supply Hard drive motherboard

What connector has 4 pins, is used for older IDE drives and some SATA drives, and can provide +5 V and +12 V power outputs?

Molex connector

What is the second step in opening the case of a working computer?

Power down the system and unplug it

What is the connector called a network cable that connects to an Ethernet port?

RJ-45

What are two resources that may be useful in disassembling a laptop computer?

Service manual User manual

When is it okay to touch the inside of a computer that is turned on?

When using a multimeter to measure voltage output