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Which two sets of pins are looped on an RJ-45 56K loopback plug? (Choose two.)

A.

pins 1 and 4

Answers
A.

pins 1 and 4

B.

pins 1 and 7

Answers
B.

pins 1 and 7

C.

pins 2 and 5

Answers
C.

pins 2 and 5

D.

pins 2 and 7

Answers
D.

pins 2 and 7

E.

pins 2 and 8

Answers
E.

pins 2 and 8

Suggested answer: A, C

Explanation:

An RJ-45 56K loopback plug is used to test the functionality of network ports, particularly for T1/56K lines. The correct loopback wiring for such a plug involves looping pins 1 and 4, as well as pins 2 and 5. This configuration allows the device to send and receive signals on the same wire pairs, effectively testing the transmit and receive paths of the port1.

asked 07/10/2024
Nagaretnam, Ravin
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