CV0-004 Troubleshooting Practice Question
A cloud load balancer is not distributing traffic evenly to backend servers. All servers pass health checks. Which of the following is the most likely cause?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Session persistence is enabled and directing traffic to specific servers.
Session persistence (sticky sessions) is the most likely cause because it forces the load balancer to direct traffic from the same client to the same backend server, leading to uneven distribution. All servers passing health checks rules out health check issues (Option A and D). A server reaching its connection limit (Option B) would typically cause that server to stop accepting new connections, but health checks would likely fail, so it is less likely.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The health check interval is set too long.
Why it's wrong here
Long interval delays detection but doesn't cause imbalance.
- ✗
One of the backend servers has reached its connection limit.
Why it's wrong here
Health checks would fail if limit reached.
- ✓
Session persistence is enabled and directing traffic to specific servers.
Why this is correct
Sticky sessions bind clients to a server, causing imbalance.
- ✗
The health check path is incorrect.
Why it's wrong here
Incorrect health checks would cause servers to be marked unhealthy.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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