LPIC-2 Exam 201 (Linux Engineer) — Question 22

Which command reports information on memory usage, paging and block input/output?

Answer options

• A. free
• B. memshow
• C. lsof
• D. pidof
• E. vmstat

Correct answer: E

Explanation

The correct answer is E, vmstat, as it summarizes virtual memory statistics including memory usage and paging. The other options do not provide comprehensive information on memory and I/O operations: A shows free memory, B is not a standard command, C lists open files, and D shows process IDs.