CCNA Routing and Switching (legacy) — Question 100

Which condition does the err-disabled status indicate on an Ethernet interface?

Answer options

• A. There is a duplex mismatch.
• B. The device at the other end of the connection is powered off.
• C. The serial interface is disabled.
• D. The interface is configured with the shutdown command.
• E. Port security has disabled the interface.
• F. The interface is fully functioning.

Correct answer: E

Explanation

The correct answer is E because the err-disabled status is triggered when port security detects a violation, leading to the interface being disabled for security reasons. The other options describe various interface issues or states but do not specifically relate to the err-disabled condition.