Selasa, 15 Januari 2013

IT Essentials-Chapter 2: PC Hardware and Software (Version 4.1)

IT Essentials-Chapter 2: PC Hardware and Software (Version 4.1)


Chapter 2 Exam - IT Essentials: PC Hardware and Software (Version 4.1)

jawaban
pertanyaan
1- compressed air
2- soft cloth
Which two tools are recommended for cleaning a PC? (Choose two.) 
Defrag
Which tool should be used if a user needs to optimize space on a hard drive? 
1- Antivirus software
2- Spyware Remover
Which two types of tools can help protect a computer from malicious attacks? (Choose two.) 
Disk Management
Which tool in Windows XP gives a technician access to initialize disks and create partitions?
Phillips-head screwdriver
Refer to the exhibit. Which type of tool is presented in the graphic?
touching an unpainted part of the computer case
How does a technician discharge static buildup?
System File Checker
Which Windows XP command-line utility scans the critical files of the operating system and replaces any files that have been corrupted?
1- Spyware Remover
2- Defrag
3- Disk Cleanup
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.)
digital multimeter
Refer to the exhibit. Which type of tool is shown in the graphic?
spike
Which condition refers to a sudden and dramatic increase in voltage, which is usually caused by lightning?
Turn off and remove the power source.
Which step should be performed first when servicing computer equipment?
1- antistatic wrist strap
2- antistatic mat
Which two tools can help protect against ESD? (Choose two.)
1- wireless phones
2- microwaves
Which two devices commonly affect wireless LANs? (Choose two.)
1- electrical storms
2- power lines
What are two significant sources of EMI? (Choose two.) 
to equalize the electrical charge between a person and the equipment
Why should an antistatic wrist strap be worn when working on electronic equipment? 
It provides reference material for similar problems when such problems are encountered in the future
Why is documentation of all services and repairs an important organizational tool for a technician?
1- batteries
2- monitors
3- printer toner cartridges
Which three computer components contain hazardous materials and require special handling for disposal? (Choose three.) 
Avoid using magnetized tools.
Which precaution should be taken when working around electronic devices?
compressed air
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? 
CRT monitor
Which computer components must a technician never try to work on when wearing an antistatic wrist strap?


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