CCNA: Cisco Certified Network Associate — Question 346

The SW1 interface g0/1 is in the down/down state. What are two reasons for the interface condition? (Choose two.)

Answer options

• A. There is a protocol mismatch
• B. There is a duplex mismatch
• C. The interface is shut down
• D. The interface is error-disabled
• E. There is a speed mismatch

Correct answer: D, E

Explanation

The correct answers are D and E because an interface can be error-disabled due to various issues, leading to a down state, and a speed mismatch can prevent proper communication, also causing a down state. Options A, B, and C do not necessarily result in a down/down status; a protocol or duplex mismatch may still allow the interface to be operational in some capacity, while an explicitly shut down interface would reflect a different state.