Which server type benefits most from a load balancer?

SK0-005 By islever Editorial Last updated

Short answer

D Web server

Question

Which of the following server types would benefit MOST from the use of a load balancer?
  1. DNS server
  2. File server
  3. DHCP server
  4. Web server Correct Answer

Key Takeaways

The question tests the understanding of application-layer traffic distribution versus basic network redundancy, with the trap being the assumption that all critical servers require equal load balancing infrastructure.

Load balancers are essential for managing high-traffic, stateless services like web servers by distributing requests across multiple instances. The community consensus confirms that while other services can be clustered, web servers derive the most significant performance and availability benefits.

Expert Analysis

Why the Answer Is Correct

Web servers (D) typically handle thousands of concurrent HTTP/HTTPS requests, making them ideal candidates for load balancing to distribute traffic evenly, prevent single points of failure, and improve response times. Load balancers can also terminate SSL/TLS connections, offloading this CPU-intensive task from the backend servers.

Why the Other Options Are Wrong

DNS (A), File (B), and DHCP (C) servers generally have lower concurrency requirements or rely on different scaling mechanisms. DNS often uses Anycast routing rather than traditional layer 4/7 load balancing. DHCP is inherently stateful per lease but doesn't benefit from session persistence load balancing in the same way web apps do. File servers may use clustering for redundancy but don't typically require active-active request distribution for performance scaling.

Community Comment Notes

Most users correctly identified D as the answer, citing the need to distribute network traffic for performance. One user mistakenly selected A, likely confusing DNS resolution with general traffic distribution, but the majority agreed that web servers are the primary use case for modern load balancers.

Official Reference

https://www.nginx.com/resources/glossary/load-balancing/

This link opens the official vendor documentation in a new tab.

Exam Strategy

Focus on identifying 'stateless' services that generate high volumes of identical requests; these are the best candidates for load balancing. Avoid choosing options where statefulness or low volume makes distribution unnecessary or complex.

Community Votes

D
83%
A
17%

83% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 3 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 3

  1. RBL23168 👍 3 Answered D
    Clearly D. LBs distribute network traffic for performance.
  2. Biancoega10 👍 2 Answered D
    I think it's D.
  3. AzadOB 👍 1 Answered A
    file server

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