Operating Systems MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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Which of the following page replacement algorithms is most optimal but impractical?
A. Optimal Page Replacement
B. Least Recently Used (LRU)
C. First In First Out (FIFO)
D. Clock Algorithm
Answer: Optimal Page Replacement
In a RAID (Redundant Array of Independent Disks) system, which level provides mirroring?
A. RAID 1
B. RAID 0
C. RAID 5
D. RAID 6
Answer: RAID 1
What is the key role of the ‘Page Replacement’ algorithm in an operating system?
A. To decide which page to remove when memory is full
B. To determine which processes to swap out
C. To allocate memory for processes
D. To manage the virtual memory paging system
Answer: To decide which page to remove when memory is full
Which of the following algorithms is used for file allocation?
A. Linked Allocation
B. Round Robin
C. Optimal Page Replacement
D. Multilevel Queue
Answer: Linked Allocation
Which of the following algorithms suffers from the problem of ‘starvation’?
A. Shortest Job First
B. Round Robin
C. FCFS
D. Priority Scheduling
Answer: Priority Scheduling
Which of the following is used to handle deadlocks in operating systems?
A. Banker's Algorithm
B. LRU Page Replacement
C. Segmentation
D. Paging
Answer: Banker's Algorithm
Which of the following is not a characteristic of a ‘real-time operating system’?
A. Deterministic response times
B. Time-sharing capabilities
C. Guaranteed worst-case execution time
D. Fast context switching
Answer: Time-sharing capabilities
Which of the following is the primary disadvantage of segmentation?
A. External fragmentation
B. Internal fragmentation
C. Page faults
D. Increased CPU utilization
Answer: External fragmentation
In which of the following memory management techniques does the size of a process not have to match the size of a memory partition?
A. Paging
B. Segmentation
C. Fixed-partitioning
D. Virtual Memory
Answer: Paging