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What is a good troubleshooting practice for a VLAN interface on a Switch that is in "down/down" or "up/down" state? (Choose two)

Ensure that the VLAN exists and is active.

Make sure that the VLAN interface exists and is not administratively shut down.

Check that the encapsulation is not mismatched with the peer end.

Confirm that the interface is configured with auto-negotiation mode.

Verify that the VLAN interface has an IP address configured.

Explanation

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