Which command reports the scheduling class a process falls under?

Question

Options

• Aps
• Bpriocnt1
• Cdispadmin
• Drctladm
• Eprstat

• A
  88% (44)
• B
  2% (1)
• C
  4% (2)
• D
  6% (3)

Explanation

ps with the appropriate flags (e.g., ps -ecl or ps -o class on Solaris) displays the scheduling class column (such as TS for time-sharing, RT for real-time, or IA for interactive) for each process, making it the correct tool for reporting which class a process falls under.

Why the distractors are wrong:

• B. priocntl - used to set or get scheduling parameters for processes, not simply report which class they belong to; it's a control tool, not a reporting one
• C. dispadmin - administers dispatcher configuration (e.g., adjusting time quantum tables for a class), not for inspecting individual process class assignments
• D. rctladm - manages resource controls (like CPU caps and memory limits), an unrelated subsystem
• E. prstat - a real-time process monitoring tool (like top) focused on CPU/memory usage stats, not scheduling class reporting

Memory tip: Think "ps = process status" - it's the go-to snapshot command for everything about a process's current state, including its scheduling class. If you need to change scheduling, think priocntl; if you need to configure a class, think dispadmin. Reporting = ps.

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