Exam 301b topic 1 question 69 discussion

A - Correct. BIG-IP system can mark a pool member Available if the health check succeeds or Offline if the health check fails. When you have the 5 second interval with a 16 second timeout this gives the service four tries to respond: 0 sec, 5 sec, 10 sec, 15 seconds. If no response is received or the receive string doesn’t match, then at 16 seconds the service is marked down. https://my.f5.com/manage/s/article/K16008 https://my.f5.com/manage/s/article/K350

I think must be C Because after 20s LTM will wait for 1s total after 21s to mark the node down