XK0-005 Question #1578: Real Exam Question with Answer & Explanation

Question

A Linux systems administrator is troubleshooting an I/O latency on a single CPU server. The administrator runs a top command and receives the following output: Which of the following is correct based on the output received from the executed command?

Options

• AThe server's CPU is taking too long to process users' requests.
• BThe server's CPU shows a high idle-time value.
• CThe server's CPU is spending too much time waiting for data inputs.
• DThe server's CPU value for the time spent on system processes is low.

Explanation

The server's CPU is spending too much time waiting for data inputs. This can be inferred from the output of the top command, which shows the percentage of CPU time spent in different states. The wa state stands for wait, and it indicates that the CPU is idle while waiting for an I/O operation to complete. In this case, the wa state is 52.4%, which means that more than half of the CPU time is wasted on waiting for data inputs. This can cause a high I/O latency and affect the performance of the server.

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