Which tool should be used if a user needs to optimize space on a hard drive?
Which Windows XP command-line utility scans the critical files of the operating system and replaces any files that have been corrupted?
System File Checker
Which condition refers to a sudden and dramatic increase in voltage, which is usually caused by lightning?
Which three computer components contain hazardous materials and require special handling for disposal? (Choose three.)
printer toner cartridges
Why should an antistatic wrist strap be worn when working on electronic equipment?
to prevent interference from clothing and loose jewlery
to equalize the electrical charge between a person and the equipment
to prevent clothing made of silk, polyester, or wool from generating a static charge.
to draw static electricity away from a component and transfer it safely from equipment to a grounding point.
Why is documentation of all services and repairs an important organizational tool for a technician?
It allows for public sharing on the Internet
It increases the cost of services and repairs
it minimizes the requirements that are used when hiring new technicians.
It provides reference material for similar problems when such problems are encountered in the future
Refer to the exhibit which type of tool is shown in the graphic?
network traffic monitor
Which two tools can help protect against ESD? (Choose two.)
antistatic wrist strap
Which precaution should be taken when working around electronic devices?
Avoid using magnetized tools.
Only use hand tools from the same vendor.
Wear ESD protection to repair monitors in humid environments.
Avoid using ESD wrist straps and ESD mats simultaneously.
The performance of a computer is reduced after it has been using the Internet. Which three tools could be run to try to improve the performance of the computer? (Choose Three.)
a BIOS updater
Device Manager Utility
How does a technician discharge static buildup?
touching the painted part of the computer case
touching an unpainted part of the computer case
touching an antistatic wrist strap before touching any computer equipment
touching an antistatic mat before touching any computer equipment
What are two significant sources of EMI?
A technician has a room of computers which are running very hot. The technician discovers that the heat sinks in the computers are very dusty. What should the technician use to clean the heat sinks?
mild cleaning solution
Which two types of tools can help protect a computer from malicious attacks? (Choose two.)
Which computer components must a technician never try to work on when wearing an antistatic wrist strap?
Which two tools are recommended for cleaning a PC? (Choose two.)
mild abrasive detergent
Which two devices commonly affect wireless LANs? (Choose two.)
incandescent light bulbs
external hard drives
Which step should be performed first when servicing computer equipment?
wipe down the exterior with a lint-free, damp soft cloth
Open the case and check for any loose connections.
Turn off and remove the power source
Replace any suspected bad components with known good components
Refer to the exhibit. Which type of tool is presented in the graphic?
phillips head screwdriver
Which tool in Windows XP gives a technician access to initialize disks and create partitions?
A technician wants to limit the chances of ESD affecting the workspace. Which three precautions should be taken (Choose three.)
Ensure antistatic mats are on the workbench and floor
Keep humidity in the environment very low.
Ensure that all flooring is carpeted.
Wear an antistatic wrist strap
Keep all components in antistatic bags
Store all computer components in clear plastic bags.
Which precaution should be taken when working inside computer systems?
Leave the power cord attached to an outlet for grounding.
Which cleaning solution is recommended to clean the contacts of computer components?
glass cleaner with ammonia
water that is mixed with a small amount of dishwashing liquid
Why should a pencil never be used as a tool when working inside a computer?
Pencil lead is conductive.
The lead in a pencil can induce current
A pencil can hold a static charge
Pencil lead is corrosive
How does an inline UPS protect computer equipment against electrical power brownouts and blackouts?
by stopping the flow of voltage to the computer
by grounding excess electrical voltage
by switching from main power to a standby power source
by using a battery to supply a constant level of voltage
Which two actions pose a potential safety hazard to a technician? (Choose two.)
standing on an antistatic mat while working on a computer
plugging a printer into a UPS
using a magnetic screwdriver while working on a hard drive.
cleaning the inside of the computer while it is turned on
wearing a wrist strap while working inside a power supply
Which circumstance increases the likelihood of ESD damage to a computer?
self grounding against the computer case
using a magnetic screwdriver while working on a hard drive
working in low levels of humidity
Which tool is designed to loosen or tighten crosshead screws?
flat head screwdriver
Which tool could potentially cause data loss on hard disk or floppy drive?
a magnetic screwdriver
a lead pencil
a computer vacuum cleaner
Which condition refers to a reduced voltage level of AC power that lasts for an extended period of time?
A technician accidentally spills a cleaning solution on the floor of the workshop. Where would the technician find instruction on how to properly clean up and dispose of the product?
the local hazardous materials team
the insurance policy of the company
the material safety data sheet
the regulations provided by the local occupational health and safety administration
Which two devices commonly affect wireless networks? (Choose two.)
What is a proper directive for using a can of compressed air to clean a PC?
Use a long, steady stream of air from the can.
Do not spray the compressed air with the can upside down.
Do not use compressed air to clean a CPU fan.
Spray the CPU cooling fan with the compressed air to verify that the fan blade is spinning freely.
Which type of fastener is loosened and tightened with a hex driver?
six sided bolt
cross head screw