Please prove all the correct answer without explain, thank you very much QUESTIO

Question

Please prove all the correct answer without explain, thank you very much

QUESTION 1

Which of the voltages below ISN'T supplied by the power supply on your system?

24V

+12

-12

+5

1 points   

QUESTION 2

The auxiliary 4-pin power cord provides power to the processor

True

False

1 points   

QUESTION 3

What term is used to refer to components that are commonly replaced but not repaired?

TRU - Technician replaceable unit

SRU - Self replaceable unit

FRU - Field replaceable unit

URU - user replaceable unit

1 points   

QUESTION 4

Spacers are necessary to keep motherboard from touching the metal case, which might cause a short

True

False

1 points   

QUESTION 5

Why is it important to remove loose jewelry before working inside a computer case?

Because the jewelry might change color from the waves the computer gives out

Because the jewelery might get caught in the components as you work or might fall into the computer

None of the above

Because the jewelry will cause the equipment you use to show the wrong results

1 points   

QUESTION 6

What marking on a ribbon cable identifies pin 1?

The number 1 is on the cable

There is no markings to identify it

None of the above

A colored stripe usually indicates it

1 points   

QUESTION 7

You just replaced a motherboard in a desktop computer. When installing the front panel wires to the motherboard front panel header, how do you know which pins to use for each wire if the pins on the header are not labeled?

All of the above

Use the motherboard user guide online

Make a diagram of the board and the wires using pen and paper

Take a picture with a cell phone before you take the old motherboard out

1 points   

QUESTION 8

If you press and hold the power button for 3 seconds after you unplug it from the AC cord, it will not discharge the power supply

True

False

1 points   

QUESTION 9

The reason that PC technicians don’t usually repair a power supply is because there are high voltages present posing harm and it is not worth the time to repair them.

True

False

1 points   

QUESTION 10

What is the electrical voltage from the house outlet to the power supply in the USA?

115V

220V

230V

130V

1 points   

QUESTION 11

You have to use an ESD strap while working on laptops.

True

False

1 points   

QUESTION 12

Disassembling most desktops is straightforward. But, why is the service manual so important to have when you disassemble a laptop?

Because it is required by the warranty for the laptop

A service manual or documentation is not needed

The bodies for laptops vary so much, you need the documentation to properly take it apart.

None of the above

1 points   

QUESTION 13

It is never safe to touch the inside of a computer when it is running

True

False

1 points   

QUESTION 14

What is the purpose of raised screw holes or standoffs installed between the motherboard and desktop case?

To prevent a short that might happen if lines or circuits on the bottom of the motherboard touch the case when the system is running.

Standoffs are not used to mount the motherboard to the case

None of the above

To raise the motherboard in case it is the wrong case size

1 points   

QUESTION 15

When installing drives, it may be easier to connect cables to the drives before sliding them into the bay

True

False

1 points   

QUESTION 16

When assembling a desktop computer, which do you install first, the drives or the motherboard?

The motherboard because if the drives stick out too far, the motherboard might not go in easy or at all

It really doesn't matter

The drives

1 points   

QUESTION 17

The first thing to check before servicing a laptop is if it is under warranty, so the manufacturer can then perform the repair.

True

False

1 points   

QUESTION 18

It is totally safe to take the screws and the cover off from a power supply and touch the components inside

True

False

1 points   

QUESTION 19

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 first question you should ask yourself before performing the repair?

Is the repair cost too much as opposed to buying a new laptop?

Is the unit still under warranty?

None of the above

Is the motherboard still available?

1 points   

QUESTION 20

How many pins does the CPU auxiliary power connector on a motherboard have?

2

3

4

6

1 points   

QUESTION 21

When taking a computer apart, why is it important to not stack boards on top of each other?

All of the above

The boards can cause static on each other

You can dislodge chips from one or both boards

You can damage one or both boards

1 points   

QUESTION 22

How should you rock an expansion card to remove it from its slot?

Rock the card sideways

No need to rock it, when you take the screw off, it pops right out!

Rock the card lengthwise

Yank the card straight up

1 points   

QUESTION 23

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?

Power cords to the motherboard are not connected

You forgot to plug in the monitor AC power cord cable

A wire is obstructing the cooling fan

A memory module is not seated correctly

1 points   

QUESTION 24

Why is it important to buy a power supply that’s close to the requirements for your system instead of buying a higher wattage power supply?

You can buy any higher rated power supply for any system

Excess energy is wasted as heat

None of the above

It will burn out your motherboard

1 points   

QUESTION 25

It is safe to wear your ESD strap while the computer is on

True

False

A.

24V

B.

+12

C.

-12

D.

+5

Explanation / Answer

1. The voltages supplied by the power supply on your system are +12, -12, +5

2. True . The auxilliary 4 pin power connector on motherboards provides power to the processor.

3. FRU - Field replaceable unit refer to components that are commonly replaced but not repaired.

4. True - Spacers are necessary to keep motherboard from touching the metal case, which might cause a short

5. It is it important to remove loose jewelry before working inside a computer case Because the jewelery might get caught in the components as you work or might fall into the computer

6. To identify pin 1 there will be the coloured strip on ribbon cable , usually red.

7. If the labels on the board are not clearly you should Use the motherboard user guide online.

8. False. When the computer is unplug and the power button is pressed , it discharges any power stored in the capacitors.

9. True. PC technicians don't usually repair a power supply because The electricity inside a power supply can be dangerous and it's generally not worth the time.

10. The average electrical voltage from the house outlet to the power supply in the USA is 220V

11. True.

12. The bodies for laptops vary so much, you need the documentation to properly take it apart.

13. True.

14. To prevent a short that might happen if lines or circuits on the bottom of the motherboard touch the case when the system is running.

15. True.

16.When assembling a desktop computer drives are installed first.

17. True.

18. False.

19. The first question to be asked is Is the repair cost too much as opposed to buying a new laptop?

20. The CPU auxiliary power connector on a motherboard have 4 pins.

21. When taking a computer apart, why is it important to not stack boards on top of each other because You can dislodge chips from one or both boards

22. To rock an expansion card to remove it from its slot you should Yank the card straight up

23. The cause of the problem is that the Power cords to the motherboard are not connected

24. Because It will burn out your motherboard.

25. False . wearing ESD strap in front of CRT monitor is not safe.

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