N10-005 Question #792: Real Exam Question with Answer & Explanation

The correct answer is B: RJ-11. RJ-11 is the standard telephone connector that supports a maximum of two wire pairs (4 conductors), unlike RJ-45 which supports four pairs.

Question

Which of the following network media connectors can use a MAXIMUM of two copper wire pairs?

Options

AF-connector
BRJ-11
CMTRJ
DRJ-45

Explanation

RJ-11 is the standard telephone connector that supports a maximum of two wire pairs (4 conductors), unlike RJ-45 which supports four pairs.

Common mistakes.

A. The F-connector is used with coaxial cable, which has a single center conductor and a shield - it does not use copper wire pairs at all.
C. MTRJ (Mechanical Transfer Registered Jack) is a fiber optic connector that carries two optical fibers, not copper wire pairs.
D. RJ-45 supports up to four copper wire pairs (8 conductors), which exceeds the two-pair maximum asked about in the question.

Concept tested. RJ-11 connector copper wire pair capacity

Reference. https://www.comptia.org/certifications/network

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