What type of connector is known for its secure locking mechanism with a 1/4 turn?

The BNC connector is known for its secure locking mechanism that operates with a 1/4 turn. This design is particularly effective in providing a reliable connection in video and radio frequency applications. The 1/4 turn feature allows the connector to be securely fastened and ensures that it remains connected even in demanding environments, making it an ideal choice for professional video equipment. This locking system prevents accidental disconnections, which is crucial during live broadcasts or when transmitting signals in motion.

In contrast, other connectors like the RCA and USB do not incorporate a locking mechanism and can be easily disconnected without additional effort. The XLR connector does have a locking feature but typically requires a push and twist to lock, rather than a simple 1/4 turn. The specificity of the 1/4 turn in the question directly pertains to the BNC connector, which is why it is the correct answer.