When working with hardware, you may need to test the operation and functionality of the physical ports on a computer. What tool allows you to run diagnostics software to test the physical operation of computer ports?
A) Multimeter
B) Torx screwdriver
C) Loopback plug
D) Crossover cable
The answer: C) Loopback plug
A loopback plug will take the signal from a physical port and loop it back into a computer. Diagnostics software will send signals out of the port and look for the same signal to arrive back into the computer.
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