Download JNTUH MCA 3rd Sem R17 2022 March-April 843AC Marchapril Operating Systems Question Paper

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R17

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Code No: 843AC

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, March/April - 2022

OPERATING SYSTEMS

Time: 3 Hours Max.Marks:75

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Answer any five questions

All questions carry equal marks

1. Explain in detail about multiprogrammed, time-shared and real time systems in details. [15]
2. Discuss about various process and file handling utilities. [15]
3. Find out average waiting time for given data using SJF and round robin (time quantum: 2units) scheduling algorithm: [15]
   

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   Process ID | Arrival time | Burst time
   P01 0 5
   P02 2 3
   P03 4 2
   P04 5 6
   

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   P05 6 4
4. What is a deadlock? How can it be detected and recovered? [15]
5. How semaphores can be for process synchronization ? [15]
6. Explain IPC between processes on different systems using message queues and shared memory. [15]
7. Simulate page replacement algorithms on following reference strings: [15]
   

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   1,2,3,2,1,2,3,4,5,6,5,4,3,5
8. Explain various file allocation and access methods. [15]

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