Which of the following is not a characteristic of cheap cable testers?
A. They may be able to test for split or crossed pairs and for shorts.
B. They come with a small loopback device that you insert into the far end of the cable, making it possible to test installed cables.
C. Most test only for broken wires.
D. They usually require you to insert both ends of the cable into the tester, making them impossible to use for cable already installed in the wall.
Answer: B
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