What type of connection does an RJ-11 connector primarily support?

The RJ-11 connector primarily supports phone line connections. This is because RJ-11 connectors are designed specifically for use with telephone networks. They typically have 2 to 6 pins and are mainly used for connecting telephones, modems, and other devices that interface with residential and commercial telephone lines. The compatibility of RJ-11 with various voice communication systems highlights its function as the standard connection for analog phone lines, making it essential in traditional telephony.

The other options refer to different types of connections altogether. Ethernet connections utilize RJ-45 connectors, coaxial connections use coaxial cables with F-type connectors or other specific connectors, and fiber-optic connections require specialized connectors designed for fiber cables, such as SC, LC, or ST types. Each of these has distinct physical and operational characteristics, differentiating them from the RJ-11's primary function with phone systems.