CompTIA Server+ (SK0-005) — Question 172

An administrator is troubleshooting an application performance issue on a virtual server with two vCPUs. The application performance logs indicate CPU contention. The administrator adds more vCPU cores to the VM, yet the issue persists. Which of the following is the MOST likely reason for this issue?

Answer options

• A. The server has high page utilization.
• B. The server has high disk latency.
• C. The application is single-threaded.
• D. The application cannot be virtualized.

Correct answer: C

Explanation

The correct answer is C because a single-threaded application can only utilize one vCPU at a time, leading to CPU contention regardless of the number of vCPUs assigned. Options A and B are less likely to be the root cause since they relate to memory and disk performance rather than CPU contention. Option D is incorrect because many applications can be virtualized, but their performance may still be limited by their architectural design.