RJ-11 is commonly associated with which of the following?

RJ-11 is a type of connector commonly used for telephone wiring. It is designed to connect telephone lines to the phone itself or to devices such as modems. This connector is recognized for its compact size and typically has four or six pins, allowing it to support one or two telephone lines. Because it is specifically associated with phone lines, it is the appropriate choice in this context.

In contrast, the other options relate to different types of connections and technologies. Ethernet networking utilizes RJ-45 connectors, which have more pins and are designed for network data transmission. Video output connections often involve different standards such as HDMI or VGA, and audio inputs utilize connectors like RCA or TRS jacks. Therefore, RJ-11's specific use case and design for telecommunication functions make it distinctly tied to phone lines.