Back goes the loop

Published on September 16th, 2011 at 8:00 am

Last modified on August 13th, 2012 at 9:57 am



Which of these would be the best use of a loopback plug?

A) Check network connectivity from the LAN switch

B) Redirect printer jobs to a network printer

C) Check the error rates of a local network port

D) Convert a serial interface type from 9-pin to 25-pin

E) Keeps the hot side hot, and the cold side cold


The answer: C) Check the error rates of a local network port

A loopback plug takes the signal from a port or interface and redirects it back to the port. With the right diagnostics software, you can verify that the hardware interface is operating properly.

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Category: CompTIA A+ Pop Quizzes

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