LC vs MPO connectors -- which statement is accurate?

• A. LC is duplex fiber connector; MPO is multi-fiber high-density.
• B. LC is duplex fiber; MPO is single-fiber.
• C. LC uses coax; MPO uses copper.
• D. LC is used for audio; MPO for video.

Answer: (A)

The key idea is how many fibers each connector carries and how compact the arrangement is. LC is a small-form-factor connector designed for a duplex setup, meaning two fibers—one for transmit and one for receive—fit in a single, compact housing. This makes LC common for standard two-fiber links in fiber optics.

MPO is a multi-fiber high-density connector, designed to hold many fibers in one ferrule—commonly 12 or 24 fibers. This enables parallel optical paths and is widely used for high-bandwidth data-center applications where many fibers are run together in trunk cables.

The other statements conflict with how these connectors are used: they are fiber optic, not coax or copper, and MPO is not a single-fiber connector. They also don’t pertain to audio or video use in this context.

So, LC being a duplex fiber connector and MPO being a multi-fiber high-density connector accurately describes their main differences.