CompTIA A+ Core 1 (220-1201)NetworkingMedium
A technician is installing a fiber optic backbone link between two buildings and must terminate the cable with a connector that uses a bayonet-style twist-and-lock mechanism. Which connector type should the technician use?
- AST connector
- BRJ45 connector
- CLC connector
- DF-connector
Show answer & explanationAnswer & explanation
Correct answer: A. ST connector
The ST (Straight Tip) connector uses a bayonet-style twist-and-lock mechanism similar to a BNC connector, distinguishing it from the push-pull LC and SC fiber connectors.
Why the other options are wrong
- B. RJ45 is a copper Ethernet connector, not used for fiber optic cabling.
- C. LC is a small form-factor push-pull connector, not a twist-lock bayonet type.
- D. F-connectors are screw-on connectors used for coaxial cable, not fiber.
ST Fiber Connector
The ST (Straight Tip) connector is a fiber optic connector that uses a bayonet-style twist-and-lock coupling mechanism, similar to a BNC connector.
- Uses bayonet twist-lock coupling
- Older style connector, still used in some legacy installs
- Differs from push-pull LC and SC connectors
Memory trick: 'ST' = 'Spin and Twist' to lock it in place.