Download JNTUA MCA 2019 May Reg-Supply 3rd Sem 17F00305 Operating Systems Question Paper

Code: 17F00305

MCA II Semester Supplementary Examinations May 2019

OPERATING SYSTEMS

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(For 2017 admitted batches only)

Time: 3 hours Max. Marks: 60

Answer all the questions

1. Describe system calls. Also explain different types of system calls provided by an operating system.

   OR

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   Explain process scheduling and inter process communication in detail.

2. Explain in detail of critical section problem.

   OR

   Describe shortest job first scheduling algorithm. Explain the scheduling criteria.

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3. Explain the concepts of Paging and the structure of page table in detail.

   OR

   What is a deadlock? Explain the deadlock recovery process.

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4. Describe in detail about the RAID structure.

   OR

   Discuss the operating structure of a file-system implementation and directory implementation.

5. Write about the following:

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   • Domain of protection.
   • Language based protection.

   OR

   Write a brief note on cryptography and how to use it in computer security with one example.

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