CompTIA Network+ Practice Test

Which connector type is used primarily for telephone and DSL connections?

1. ST connector

2. F connector

3. RJ11

4. LC connector

The correct answer is: RJ11

The RJ11 connector is primarily used for telephone and DSL connections due to its design that accommodates the single line used for standard telephone services. It typically has four or six positions and corresponds to the wires needed for voice and basic data transmission over phone lines. This connector is specifically associated with POTS (Plain Old Telephone Service) and is essential for connecting devices like telephones, modems, and DSL lines to the telephone network. Other connectors, such as the ST and LC connectors, are designed for fiber optic connections, focusing on higher-speed data transfer and are not used for traditional telephone or DSL services. The F connector is commonly used for cable television and certain broadband cable internet connections but does not serve telephone services. Thus, the RJ11 is the most appropriate choice for its direct application in telephone and DSL scenarios.