CompTIA A+ Core 1 (220-1201)NetworkingEasy
A technician needs to connect an old analog telephone to a wall jack in an office. Which of the following connector types should the technician use?
- ASC
- BF-connector
- CRJ45
- DRJ11
Show answer & explanationAnswer & explanation
Correct answer: D. RJ11
RJ11 connectors are used for analog telephone lines and typically have four or six pins, only two of which carry the voice signal. RJ45 is used for Ethernet, SC is a fiber optic connector, and F-connectors are used for coaxial cable.
Why the other options are wrong
- A. SC is a fiber optic connector, not used for phone lines.
- B. F-connectors are used for coaxial cable such as cable TV or internet.
- C. RJ45 is the larger 8-pin connector used for Ethernet networking.
RJ11 Connector
RJ11 is a small modular connector, typically with 4 or 6 pins, used for analog telephone connections.
- Used for telephone lines, not Ethernet
- Smaller than RJ45
- Usually uses only 2 of the available pins for voice
Memory trick: RJ11 = 'eleven' pins are fewer, for phones not computers.