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2014 B.Tech Computer Science and Engineering B.Tech - CSE - November 2014 - Question paper - CS215 - Operating Systems (OS) - Acharya Nagarjuna University Question paper



Course: B.Tech Computer Science and Engineering   University/board: Acharya Nagarjuna University

This is an old question paper of Acharya Nagarjuna University - B.Tech - CSE - CS215 - Operating Systems (OS). If you want these papers, you are in the right place. This is the original question paper of the exam conducted by Acharya Nagarjuna University to 2/4 B.Tech - 1st Semester students in November 2014. Don't hesitate to download or print this paper and use it in your exam preparation.




[Total No. of Questions : 09]

CS/IT 215 (CR)



II/IV B.Tech Degree Examinations, November 2014

First Semester

CS/IT

Operating Systems



Time : 3 hours

Maximum Marks : 70



Answer question No.1 Compulsory

Answer ONE question from each Unit


1. Briefly explain following [7 x 2 = 14M]
a) Batch systems.
b) System boot.
c) Recovery from deadlock.
d) Thread libraries.
e) Thrashing.
f) File access methods.
g) Stream.

UNIT - I [1 x 14 = 14M]

2. a) Define process and explain different operations on process.
2. b) What are the services provided by the operating system? Explain in brief. (OR)
3. Write brief on the following :
a) Virtual machine.
b) Examples of IPC systems.
c) Operating system structure.

UNIT - II [1 x 14 = 14M]

4. a) Explain the threading issues in multi-threaded models.
4. b) Explain the scheduling criteria with suitable examples. (OR)
5. a) Explain with a suitable example the 'classical problem of synchronization' and how it can be dealt with +.
5. b) Write a brief on Process, Thread, Atomic transaction.

UNIT - III [1 x 14 = 14M]

6. a) Define deadlock and explain the characteristics of deadlock.
6. b) Explain the structure of the page table.
6. c) Write a brief on Demand paging. (OR)
7. a) Explain the concept of segmentation and give a proper representation of segmentation hardware.
7. b) Explain optimal page replacement and LRU page replacement algorithm with suitable example.

UNIT - IV [1 x 14 = 14M]

8. a) Define file and explain the file attributes, operations on files, structure of file and types of files.
8. b) Write a brief on Application I/O interface and Kernel I/O interface. (OR)
9. Explain different disk scheduling algorithms with suitable example for each distinguishing the differences in scheduling.





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