F5 BIG-IP LTM Specialist: Maintain and Troubleshoot — Question 3

An LTM device is monitoring pool members on port 80. The LTM device is using an HTTP monitor with a send string of GET / and a blank receive string.
What would cause the pool members to be marked down?

Answer options

• A. A pool member responds with an HTTP 200 series response code.
• B. A pool member responds with an HTTP 300 series response code.
• C. A pool member responds with an HTTP 400 series response code.
• D. A pool member responds with an HTTP 500 series response code.
• E. A pool member does NOT acknowledge the connection SYN on port 80.

Correct answer: E

Explanation

The correct answer is E because if a pool member does not respond to the SYN packet, it indicates that the member is not reachable or not operational, leading to it being marked down. The other options (A, B, C, D) all represent valid HTTP responses that would not cause the pool member to be marked down, as they indicate the member is operational but may have different issues related to HTTP status codes.