Download GTU BE/B.Tech 2018 Winter 4th Sem Old 140702 Operating System Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem Old 140702 Operating System Previous Question Paper

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Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (OLD) EXAMINATION ? WINTER 2018
Subject Code:140702 Date: 10/12/2018

Subject Name: Operating System

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) What is Operating System? Give the view of OS as Resource Manager. 07
(b) What is deadlock? Explain the Banker?s algorithm for deadlock avoidance. 07

Q.2 (a) What is context switching? Explain significance and elements of PCB. 07
(b) Write short notes on following
(i) Contiguous Allocation and Linked List Allocation for File System
Implementation.
(ii) File Types and File Access (sequential access and random access).
07
OR
(b) What is Semaphore? Give the implementation of Bounded Buffer
Producer Consumer Problem using Semaphore.
07

Q.3 (a) Explain various Disk Arm Scheduling Algorithms with illustration. 07
(b) Explain IPC Problem ?Dining Philosopher Problem. 07
OR
Q.3 (a) What is critical section? What is Mutual exclusion? Explain Peterson?s solution
for mutual exclusion problem.
07
(b) Explain various file attributes and file operations in brief. 07

Q.4 (a) Explain the various page replacement strategies. 07
(b) Explain the following terms:
Process, Multithreading, Multitasking, Mutual Exclusion, Turnaround Time,
Response Time, Virtual Memory
07

OR
Q.4 (a) Explain FCFS and Round Robin process scheduling algorithm with example. 07
(b) Explain the followings:
Use of ?inode? in UNIX File System,
Direct Memory Access.
07

Q.5 (a) Explain different types of operating system. 07
(b) What is scheduler? Explain queuing diagram representation of process
scheduler with figure.
07
OR

Q.5 (a) What is Paging? What is Page Table? Explain the conversion of Virtual
Address to Physical Address in Paging with example.
07
(b) Explain the following commands in UNIX:
grep, who, man, finger, ls, cat, ps
07


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