CompTIA DataX (CNX-001) — Question 77

A SaaS company's new service currently is being provided through four servers. The company's end users are having connection issues, which is affecting about 25% of the connections. Which of the following is most likely the root cause of this issue?

Answer options

• A. The service is using round-robin load balancing through a DNS server with one server down.
• B. The service is using weighted load balancing with 40% of the traffic on server A, 20% on server B, 20% on server C, and server D is down.
• C. The service is using a least-connection load-balancing method with one server down.
• D. Load balancing is configured with a health check in front of these servers, and one of these servers is unavailable.

Correct answer: A

Explanation

The correct answer is A because if the load balancing is done using round-robin and one server is down, it would lead to connection issues for a significant portion of users. The other options involve different load balancing methods or configurations, but they either do not specify a down server affecting the distribution or imply that health checks are in place, which would prevent traffic from being directed to a down server.