Question

An ELB instance is configured with the default HealthCheck and Response Timeout intervals as 30 seconds and 5 seconds respectively. How long will it take for an instance within a target group to be labelled as OutOfService, if it goes down a second after the latest HealthCheck?

B. 30 seconds
C. 35 seconds
D. 4 seconds
A. 34 seconds

Answer 1

An ELB instance with default HealthCheck and Response Timeout intervals will take 35 seconds for an instance within a target group to be labeled as OutOfService if it goes down just after the latest HealthCheck.

Step-by-step explanation:

When an instance within a target group goes down just after the latest HealthCheck, the total time it takes for the instance to be labeled as OutOfService is the sum of the HealthCheck interval and the Response Timeout interval.

In this case, the default HealthCheck interval is 30 seconds and the default Response Timeout interval is 5 seconds, so the total time is 30 seconds + 5 seconds = 35 seconds.

Therefore, option C is the correct answer.