GATE CS Subject
Operating Systems GATE CS Questions
- 298 questions in this subject
- Years covered: 1987-2026
- Topic: Process Scheduling
- Topic: Memory Management
- Topic: Deadlocks
- Topic: Semaphores
- Topic: File Systems
- Topic: Page Replacement
Overview & Analysis
Operating Systems (OS) is a core topic in the GATE CS exam, typically accounting for 8 to 10 marks of the total paper. The syllabus spans fundamental concepts of how software interacts with hardware, scheduling algorithms, and resource allocation policies.
The questions in GATE test both conceptual clarity and numerical precision. Topics like paging, virtual memory address translation, and disk/CPU scheduling frequently appear as high-scoring numerical questions, while semaphores and critical section problems test logical concurrency understanding.
Frequently Asked Questions (FAQ)
Q: What are the core topics of Operating Systems in the GATE CS exam?
A: The core syllabus covers CPU scheduling, memory management (including virtual memory, paging, TLBs, and page replacement), concurrency control (semaphores, critical section, mutexes), deadlocks (prevention, avoidance, detection, recovery), file systems, and disk scheduling.
Q: How should I prepare for OS questions in GATE?
A: Focus on understanding numerical problems from paging address translation, CPU scheduling algorithms, and page replacement strategies. Additionally, trace execution steps for semaphore-based synchronization code to master logical synchronization questions.
Q: Is CPU scheduling important for GATE CS?
A: Yes, CPU scheduling algorithms like Round Robin (RR), Shortest Job First (SJF), and Preemptive Priority Scheduling are tested frequently with numerical questions targeting average waiting time or turnaround time.
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