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What is the expected outcome if the health check port is set incorrectly in a target group configuration?

medium📝 Debug Q7 of 15
AWS - Elastic Load Balancing
What is the expected outcome if the health check port is set incorrectly in a target group configuration?
ATargets will be marked healthy regardless of actual status.
BAll targets will be marked unhealthy, causing no traffic to be routed.
CThe load balancer will ignore health checks and route traffic normally.
DOnly targets on the correct port will be marked unhealthy.
Step-by-Step Solution
Solution:

  1. Step 1: Role of health check port

    The health check port must match the port where the target listens for health probes.

  2. Step 2: Consequence of incorrect port

    If the port is wrong, health checks fail, marking targets unhealthy.

  3. Final Answer:

    All targets will be marked unhealthy, causing no traffic to be routed. correctly states that all targets become unhealthy and no traffic is routed.

  4. Quick Check:

    Incorrect health check port causes all targets unhealthy [OK]
Quick Trick: Wrong health check port marks all targets unhealthy [OK]
Common Mistakes:
  • Assuming targets remain healthy despite wrong port
  • Believing load balancer ignores health check failures
  • Thinking only some targets are affected

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