A BIG-IP Administrator notices that one of the servers that runs an application is NOT receiving any traffic. The BIG-IP Administrator examines the configuration status of the application and…

If the Node Health Monitor is not responding, it means the BIG-IP system cannot successfully check the health of the backend server. This will cause the pool member (the server) to be marked down, and consequently, no traffic will be directed to it by the BIG-IP.

While an incorrect receive string can cause a monitor to fail, the question's context of an affected pool member status points to the monitor's failure to respond, not necessarily the specific content of an application's response.

HTTP 1.1 is widely used and perfectly appropriate for monitoring purposes; this statement is generally false in the context of BIG-IP health checks.

The BIG-IP device is configured with pools and pool members; it doesn't 'reach the Pool' as a network entity but rather communicates with the individual pool members (servers).