ans. Form Factors
2. What type of casing would you most likely to recommend for a server?
ans. Full-size towers
3. Describe what is computer hardware.
ans. Computer hardware is the physical equipment such as the case, storage drivers, keyboards, monitors, cables, speakers, and printers.
4. Describe what is computer software.
ans. Computer software is the operating system and programs.
5. How many bits are there in 1 nibble?
ans. 1 nibble = 4 bits
6. How many bits are there in 1 byte?
ans. 1Byte = 8 bits
7. What is the purpose of the computer power supply?
ans. -Converts AC power from the wall socket into DC
-Must provide enough power for the installed components and future additions.
8. List the parameters to consider when doing a case selection.
ans. -Specifies size
-Shape
-Features of a hardware device.
9. List the differences of AT, Baby AT, ATX and BTX motherboard form factors.
ans. AT dimensions of 12 x 13.8
Baby AT dimension of 13 x 8.7
ATX dimension of 12 x 9.6
10. What is the unit to specify the power ratings of a computer supply?
ans. Watt
11. What is the purpose of a rectifier?
ans. converts AC to DC
12. What is the purpose of a receptacle tester?
ans. To verify that hot, neutral, and ground are wired correctly
13. List 2 uses of a capacitor?
ans. -Holds electrical charge for a period of time
-Used to rectify current ( convert AC to DC)
14. List 2 uses of a diode?
ans. -Allows electricity to flow in one direction only
-Used to rectify current ( convert AC to DC)
15. What is a resistor used for?
ans.- Controls the amount of current flowing through device.
- Degree of resistance is measured in ohms.
16. What does ESD stands for ( in CMOS module )
ans. Electrostatic discharge
17. List 3 methods of reducing ESD damage when making hardware changes to the pc motherboard?
ans. -Used ground bracelet or ESD gloves
-Touch computer case before touching components
18. Name 2 computer peripherals that you are working on which you should not use an antistatic strap.
ans. A monitor or a CRT.
19. What is the first safety rule before working on the computer hardware?
ans. Unplug power cord before working in case.
20. What is EMI?
ans. Electromagnetic Interference
21. How to avoid EMI?
ans. - Use line conditions to filter out electrical noise and move the pc to a new location.
22. What devices are may be used to manage power surges?
ans. surge suppressors, power conditioners and corruptible power supply.
23. What is the use of a surge suppressor?
ans. Protects equipment from sudden changes in power.
24. What is the use of a power conditions?
ans. Protect against spikes or swells and raise voltage during brownouts.
25. What is the use of a UPS?
ans. Provides power backup when AC fails
Provides protection against very high spikes.
26. What is Smart UPS?
ans. Uninterpretable Power Supply controlled by a software.
27. What are the form factors to consider when buying a UPS?
ans. - UPS rating should exceed VA load by at least 25%
- Degree of line conditioning
- Warranties, guarantees, and service policies
28. Name 2 types of power management protocol used on computer system.
ans. -Advanced configuration and power interface.
-Advanced power management.
29. Name a few levels of power-saving modes are there in ACPI specifications?
ans.S1 , S2 , S3 , S4
30.Where would you check if the ACPI feature is NOT working Properly?
ans. BIOS settings
a
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