100-150 Question 151
Single answerA network technician is troubleshooting a connectivity issue on a switch port. The Ethernet link light on the port is blinking amber. What does this indicate?
- A
The port has no connection to a device.
- B
The port is experiencing a duplex mismatch or other errors.
- C
The port is operating normally and passing data.
- D
The port is administratively shut down.
Show answer and explanation
Correct answer: B
Explanation
A blinking amber link light on a switch port is a clear indicator of an issue, such as a duplex mismatch or other errors (e.g., CRC errors or collisions). Understanding the meaning of link light colors and statuses is critical for diagnosing and resolving networking issues effectively.
- A. Incorrect.
This is incorrect because if the port has no connection, the link light would typically be off or show no activity.
- B. Correct.
This is correct because a blinking amber link light typically indicates errors such as a duplex mismatch, CRC errors, or excessive collisions.
- C. Incorrect.
This is incorrect because a port operating normally and passing data would usually display a green link light (blinking or solid).
- D. Incorrect.
This is incorrect because when a port is administratively shut down, the link light is usually off.