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 What is an operating system? Explain various functions of an operating
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Q1 Consider the following set of processes, with the length of the CPU burst given in milliseconds: The processes are assumed to have arrived in the order P1, P2, P3, P4, all at time 0
- a. Draw four Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: FCFS, higher priority), and RR (quantum = 1)
- b. What is the turnaround time of each process of the scheduling algorithms in part a?
- c. What is the waiting time of each process of the scheduling li. Considering a system with five processes Po through P4 and three resources of type A, B, C. Resource type A has 10 instances, B has 5 instances and type C has 7 instances. Suppose at time to following snapshot of the system has been taken:
- a. What will be the content of the Need matrix?
- b. Is the system in a safe state? If Yes, then what is the safe
- c. Can the request be granted if process P; requests one additional instance of resource type and two instances of resource type B Solve any Two Questions out of Three 10 marks each Explain the hardware support for paging with TLB in detail Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999 The drive is currently serving a request at cylinder 143, and the previous request was at cylinder 125. The queue of pending requests in. FIFO is ordered as 80, 1470, 913, 1777, 948, 1022, 1750, 130 What is the total distance that the disk arm moves for following by applying following algorithms? 1. FCFS 2. SSTF 3. SCAN 4. C Define Semaphore. Explain different types of semaphore in detail Solve any Two 5 marks each Explain various I/O Buffering Techniques Define thread and discuss different types of threads Explain PCB with respect to context switching Solve any One 10 marks each
- i. Define Deadlock. Explain the four necessary conditions to occur deadlock? Explain deadlock prevention technique Explain various characteristics of memory system in detail
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