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Engineering B.E. (Computer Engineering) Sem 5 Operating System Dec 2018 Question Paper - Mumbai University | munotes

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Operating System Question Paper, Dec 2018.pdf
CMPN · 96 KB · 1 May 2025

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Older exam None: this is the earliest we hold
Newer exam May 2019 Semester-end · Operating System →

Questions asked in this paper

  1. Q1 (a) Explain the critical section problem in brief 5 marks
    • (b) What do you mean by virtual memory? 5
    • (c) Explain the system components in Windows Architecture 5
    • (d) State any five system calls 5
  2. Q2 (a) Given the following queue - 95, 180, 34, 119, 11, 123, 62, 64, in FIFO order with Read-write head initially at the track 50 and the tail track being at 199, discuss the following disk scheduling algorithms 10 marks
    • (b) Explain the readers/writers problem. Suggest a solution for the same 10
  3. Q3 (a) Explain file management in UNIX 10 marks
    • (b) What is deadlock? Explain the deadlock avoidance in detail 10
  4. Q4 (a) Explain different page replacement policies with a suitable example 10 marks
    • (b) Differentiate the following: 10
    • (a) Consider the following set of processes, with the length of CPU burst in miliseconds 10 The processes are assumed to have arrived in the order P1, P2, P3, P4, PS all at time 0 Draw Gnatt charts for the following scheduling algorithms- FCFS, SJF, Non-preemptive priority and RR(quantum=1) and also calculate the turnaround time, average waiting
    • (b) Explain the hardware support for paging 10
  5. Q6 Write notes on the following: 20 marks
    • (a) Thrashing and working set model
    • (b) State transition in UNIX
    • (c) I/O buffering techniques
    • (d) Semaphores

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