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GATE CS - Operating Systems
Practice process management, memory management, file systems, and disk scheduling
100 questions10 pages~150 min
Use this quiz track to strengthen recall, speed, and exam-style decision making. Attempt one page first, review explanations, and then re-attempt incorrect questions without notes.
A good scoring strategy is to mark uncertain questions, finish known ones quickly, and return with elimination logic. This improves accuracy while keeping momentum under time constraints.
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Page 3 of 10 • Questions 21-30 of 100
Q21medium
What is the main difference between a process and a thread?
Q22easy
In a system using demand paging, when does a page fault occur?
Q23hard
What is the time complexity of LRU page replacement algorithm implementation using a stack?
Q24medium
Which file allocation method has no external fragmentation?
Q25medium
What is the main advantage of multilevel page tables?
Q26medium
In Round Robin with time quantum = 4ms, if a process has burst time 10ms, how many context switches occur?
Q27easy
What is the purpose of the reference bit in page replacement?
Q28medium
Which scheduling algorithm is used in real-time systems?
Q29medium
What is the main problem with the Producer-Consumer problem?
Q30hard