Supporting Cisco Routing and Switching Network Devices (RSTECH) — Question 2

The pins on an RJ-45 cable plug are numbered from 1 through 8. When the metal pins of the plug are facing toward you, pin 1 is the leftmost pin. Which two sets of pins are looped on an RJ-45 56K loopback plug? (Choose two.)

Answer options

• A. pins 2 and 7
• B. pins 2 and 8
• C. pins 2 and 5
• D. pins 1 and 7
• E. pins 1 and 4

Correct answer: C, E

Explanation

The correct answer includes C (pins 2 and 5) and E (pins 1 and 4) because these are the specific pairs that are looped in a 56K loopback plug, allowing for testing of the device. Options A, B, and D do not match the loopback configurations required for this type of plug.