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If a load balancer health check fails on one server, what happens to the traffic meant for that server?

medium📝 Predict Output Q5 of 15
AWS - Elastic Load Balancing
If a load balancer health check fails on one server, what happens to the traffic meant for that server?
ATraffic is redirected to healthy servers
BTraffic is lost and not processed
CTraffic is sent to the failing server anyway
DTraffic is stored for later processing
Step-by-Step Solution
Solution:
  1. Step 1: Understand load balancer health checks

    Load balancers monitor server health and avoid sending traffic to unhealthy servers.
  2. Step 2: Identify traffic behavior on health check failure

    Traffic is redirected to only healthy servers to maintain service availability.
  3. Final Answer:

    Traffic is redirected to healthy servers -> Option A
  4. Quick Check:

    Failed health check = Traffic rerouted [OK]
Quick Trick: Unhealthy servers don't get traffic [OK]
Common Mistakes:
  • Assuming traffic is lost
  • Sending traffic to failing servers
  • Storing traffic instead of redirecting

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