A technician needs to connect a fiber cable to a distribution panel that has a round barrel connection. Which of the following would be required?

The SC (Subscriber Connector) is a fiber connector with a square push-pull body, not a round barrel design.

The LC (Lucent Connector) is a small form-factor fiber connector with a rectangular latch mechanism, not a round barrel.

BNC (Bayonet Neill-Concelman) connectors are used with coaxial copper cable, not fiber optic cable.

The ST connector is a fiber optic connector characterized by its round, spring-loaded bayonet coupling mechanism - the technician inserts the ferrule and twists it to lock, creating a round barrel profile. Distribution panels and older fiber installations frequently use ST connectors, and the physical description of a 'round barrel connection' directly identifies the ST form factor. ST connectors were among the first widely deployed fiber connectors and remain common in legacy enterprise and campus wiring.