Computer Engineering Sem 4 Operating System Question Paper PDF 2026 - Mumbai University | munotes
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Questions asked in this paper
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Q1 Explain external fragmentation with example e Give different file access methods 2 a What are system calls? Explain different types of system calls with example. [10] Explain Deadlock and how to prevent it? [10] 3 Consider the following set of processes. [10]
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Q1 Draw Gantt chart for FCFS, and Round Robin (Quantum=2)
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Q2 Also calculate average waiting time and turnaround time for above scheduling Explain how producer consumer problem can be solved using semaphore. [10] 4 a_ Explain the role of PCB. [10] b Consider the following page reference string: 4,3,2,1,4,3,5,4,3,2,1,5. Assume [10] frame size=3.How many page faults would occur for FIFO, Optimal and LRU 5 a Resource Allocation Graph be used to detect deadlock in the system? [10] Explain the concept of segmentation with an example. [10] 6 Write a short note on file directory structure. [10] b Suppose that a disk drive has 200 Cylinders, numbered 0 to 199. Queue = 98, 183, [10] 124, 65,67. The drive is currently serving a request at cylinder 54 and the previous request was at cylinder 20.Find total number of head movements needed to satisfy the requests for the FCFS, SSTF and SCAN disk scheduling
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