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Subject
Electrical Engineering
Date
Dec 6, 2023
Type
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12
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:
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2.6.3 Practice Questions
Candidate:
Joseph Vincent (jvince13)
Date:
10/16/2023 12:03:09 pm •
Time Spent:
01:48
Score: 100%
Passing Score: 80%
Question 1:
Correct
You are an IT technician for your company. One of the employees has a computer that
continually reboots when it's powered on. He has asked you to
fi
x it. You suspect that the
power supply may be failing.
Which of the following is the BEST initial step to determine whether the power supply is
causing the reboots?
Use a multimeter to test the power supply.
Verify that the fan on the power supply is
spinning.
Replace the power supply.
Listen for POST code beeps to determine the
error's cause.
Explanation
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A failing power supply can cause the computer to continuously reboot. For example, pin 8
on the power supply connector connects to the power wire on the motherboard. If power
disappears from that wire, the motherboard shuts down. If power quickly reappears on
that wire, the system may attempt to come back on by itself, which causes the symptom of
continual reboots.
Using a multimeter allows you to verify the amount of voltage supplied by the power
supply.
You could replace the power supply, but it is best to test the original power supply
fi
rst, as
other issues may be causing the reboots.
A running fan is not a good indication of a properly functioning power supply since the fan
may be running, but the power supply may not be supplying the correct voltage for other
components to run properly.
Some BIOSs may have a POST beep code that can give you a clue about a failing power
supply, but this is not a reliable method for determining that the power supply is bad and
needs to be replaced, and you may not have spare power supplies on hand to use.
References
2.6.2 PC and Networking Tools Facts
3.4.1 Motherboard Troubleshooting
3.4.2 Motherboard Troubleshooting Facts
3.10.2 Processor Troubleshooting Facts
3.14.2 Power Supply Facts
q_tool_fct_continuous_reboots_pp7.question.fex
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Question 2:
Correct
You are removing screws within a computer, but several have fallen into places you can't
reach. Which tool would help retrieve the small screws?
Network tap
Punch down tool
Extension magnet
Combination ratchet/screwdriver
Explanation
An extension magnet is a small magnet on a collapsible rod that's used to retrieve screws
that have fallen into a computer case or other areas you cannot reach.
A punch down tool is used to secure cable wiring to a punch-down block or a patch panel,
not to retrieve screws that have fallen into a computer case or other areas you cannot
reach.
Unless the lost parts are in an easily accessible location, a combination
ratchet/screwdriver would be unlikely to help you retrieve the screws.
A network tap is used to collect data on tra
ffi
c traveling across a network, not for retrieval
of hardware parts.
References
2.1.2 Safety Measures
2.1.5 ESD Facts
2.6.2 PC and Networking Tools Facts
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Question 3:
Correct
Which tool would be the BEST choice for securing cable wiring to a patch panel?
Punch down tool
Combination ratchet/screwdriver
Network tap
Extension magnet
Explanation
A punch down tool is used to secure cable wiring to a punch-down block or a patch panel,
not to retrieve screws that have fallen into a computer case or other areas you cannot
reach.
An extension magnet is a small magnet on a collapsible rod that's used to retrieve screws
that have fallen into a computer case or other areas you cannot reach.
A combination ratchet/screwdriver is not designed to secure cable wiring to a patch panel.
A network tap is used to collect data on tra
ffi
c traveling across a network, not for retrieval
of hardware parts.
References
2.1.2 Safety Measures
2.1.5 ESD Facts
2.6.2 PC and Networking Tools Facts
q_tool_fct_ic_extractor_pp7.question.fex
Question 4:
Correct
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You work in the computer repair department of a large retail outlet. A customer comes in
with a workstation that randomly shuts down. You suspect that the power supply is failing.
What should you do
fi
rst to troubleshoot the issue?
Use a power supply tester on the power
supply.
Use a cable tester to check the power supply's
connections.
Use a known good spare to swap with the
existing power supply.
Use a multimeter to test the power supply's
electrical properties.
Explanation
Known good spares are sets of components that you know are in proper functioning
order. If you suspect a problem with a component,
fi
rst try to swap it with a known good
component. If the problem is not resolved, you can then continue troubleshooting other
possible issues.
A power supply tester is a custom multimeter used to test output from a PC power supply.
The power supply tester has multiple connectors to test the output for each connector
type. However, in this case, intermittent shutdowns are a common symptom of a failing
power supply.
While using a multimeter can test various electrical properties of the power supply, the
fi
rst step should be to simply swap the current power supply with a known good spare to
verify that the existing power supply is the cause of intermittent shutdowns.
A cable tester veri
fi
es that a network can carry a signal from one end to the other and that
all wires within the connector are in the correct positions. This tool is not used to test
power supply connections.
References
2.6.2 PC and Networking Tools Facts
3.4.1 Motherboard Troubleshooting
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