QUESTION 1 / 20 · PROCESSES & THREADSEasy
What is a process?
CPU SCHEDULER SIMULATOR
Who gets the CPU next?
Four processes arrive at different times needing different amounts of CPU. Pick a scheduling policy and change the burst times to see how waiting time shifts.
P1arrives t=05BURSTwaits 0 · done at t=5
P2arrives t=13BURSTwaits 4 · done at t=8
P3arrives t=28BURSTwaits 6 · done at t=16
P4arrives t=32BURSTwaits 13 · done at t=18
P1P2P3P4
05816
185.75average waiting time
ALL THREE POLICIES
Simple and fair in arrival order, but one long job makes everyone behind it wait: the convoy effect.First come, first served5.75Shortest job first4.00Round robin (q = 2)7.25
What this operating systems test covers, in short
Twenty multiple-choice questions at introductory undergraduate level, four on each of five topics: processes and threads, CPU scheduling, memory management, file systems and I/O, and concurrency. They test the core ideas behind how an operating system shares one machine between many programs.
Examples refer to general-purpose systems such as Linux, Windows and macOS. The test is our own and not normed.
By What's Your IQ · Reviewed 5 Oct 2026- Format
- 20 multiple-choice questions
- Level
- Introductory undergraduate
- Bonus
- FCFS / SJF / round-robin simulator
- Classic text
- Silberschatz, Galvin & Gagne, Operating System Concepts