What operating system tools can be used to collect capacity planning data? (Choose two.)

Yusuf A.Apr 11, 2026

The correct answers are B (vmstat) and C (iostat). vmstat gives you a snapshot of virtual memory, CPU, and process activity over time, which is exactly what you need when building a picture of where your system resources are going, and iostat shows you disk I/O and CPU utilization stats, so together those two tools are your go-to pair for capacity planning. lsmod just lists loaded kernel modules and fuser tells you which process is using a file or socket, so neither of those helps you trend resource usage.

Anjali D.Mar 31, 2026

I went with A and C at first because lsmod felt like it fit the "system diagnostics" vibe, but then I remembered lsmod just lists loaded kernel modules and tells you nothing about performance over time, so it is useless for capacity planning. vmstat and iostat are the ones that actually give you the memory, CPU, and I/O throughput data you need to trend and plan capacity, which is why B and C are the pick.

Lena V.Mar 30, 2026

Saw this exact question, froze, then remembered vmstat and iostat both report resource usage over time. B and C, locked it in, moved on.