Which of the following RF connectors is commonly used with coaxial cables for…

Concept

An RF (radio-frequency) connector is a coupling designed to carry high-frequency signals along a coaxial cable while keeping a constant characteristic impedance (typically 50 or 75 ohms) and shielding the inner conductor. Matching impedance and shielding are what let the signal travel at high frequency with minimal loss and reflection.

Application

The connector built for exactly this job is the BNC (Bayonet Neill-Concelman). It uses a quick bayonet twist-lock onto a coaxial cable, preserves the cable's impedance, and is the standard choice for high-frequency coaxial links such as test/measurement equipment, video feeds, and thin-coax (10BASE2) Ethernet.

Contrast

• HDMI carries digital audio/video over a multi-pin interface, not an RF signal on coaxial cable.

• RJ45 is the 8-position modular plug for twisted-pair (UTP) Ethernet, not coaxial RF.

• DVI is a video display connector for monitors; it is not a coaxial RF coupling.

• PS/2 is a legacy 6-pin mini-DIN connector for keyboards and mice, unrelated to RF transmission.

Result

Among the connectors offered, BNC is the RF connector used with coaxial cable for high-frequency signal transmission.