LFCA Question #54: Real Exam Question with Answer & Explanation

The correct answer is D: lop. The question asks for a command to identify resource-intensive processes when a Linux system is running slowly.

Submitted by layla.eg· May 4, 2026System Administration

Question

A host seems to be running slowly. What command would help diagnose which processes are using system resources?

The question asks for a command to identify resource-intensive processes when a Linux system is running slowly.

Common mistakes.

A. The df command reports disk space usage, not individual process resource consumption.
B. The free command displays information about total, used, and free memory, but it doesn't show per-process memory or CPU usage.
C. The uptime command shows how long the system has been running, the number of users, and the system load averages, but not individual process resource usage.

Concept tested. Linux system performance monitoring (top command)

Reference. https://man7.org/linux/man-pages/man1/top.1.html

#Process monitoring#System resources#Linux commands#Troubleshooting

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