You suspect a length of Ethernet cable may be bad and you wa

You suspect a length of Ethernet cable may be bad, and you want to test it. You use a cable tester, plugging one end of the cable into the master unit and the other end into the remote unit. What do you do next?

A. Turn on the master unit and observe the LED lights on the remote unit.

B. Turn on the remote unit and observe the LED lights on the master unit.

C. Turn on the master unit and observe the master unit’s LED lights.

D. Turn on the remote unit and observe the remote unit’s LED lights.

Solution

A. When you turn on the master unit, it sends signals through the cable that are picked up by the remote unit. If any of the wires in the Ethernet cable are broken, the corresponding LED lights will either show red or not light up at all.