Which statement about LC, SC, and ST fiber connectors is true?

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Multiple Choice

Which statement about LC, SC, and ST fiber connectors is true?

The key idea is that all three fiber connectors are designed to mate in a way that ensures proper alignment (keyed) and stays connected securely. LC, SC, and ST all have a defined mechanical interface that prevents rotation or misalignment and include a locking or retention mechanism when mated: ST uses a twist-lock bayonet, SC uses a push-pull latch, and LC uses a small form‑factor latch. So the statement that all three are keyed, contact and secure is true. The idea that LC is not keyed is incorrect, and saying SC and ST are non-secure ignores their locking features. None of the above is therefore not correct.

The key idea is that all three fiber connectors are designed to mate in a way that ensures proper alignment (keyed) and stays connected securely. LC, SC, and ST all have a defined mechanical interface that prevents rotation or misalignment and include a locking or retention mechanism when mated: ST uses a twist-lock bayonet, SC uses a push-pull latch, and LC uses a small form‑factor latch. So the statement that all three are keyed, contact and secure is true. The idea that LC is not keyed is incorrect, and saying SC and ST are non-secure ignores their locking features. None of the above is therefore not correct.

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