Download GTU BE/B.Tech 2019 Summer 4th Sem New 2140702 Operating System Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 4th Sem New 2140702 Operating System Previous Question Paper

Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2140702 Date:20/05/2019
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? explain any one types of operating system 3
(B) Explain different states of a process with a suitable diagram 4
(C) Explain the microkernel system architecture in detail. 7



Q-2 (A) Explain the features of time sharing system 3
(B) Explain process model in brief. 4
(C) What is thread? Explain thread Structure? And explain any one type of
thread in details.
7
OR
(C) Explain Round Robin algorithm with proper example. 7



Q-3 (A) Explain context switching. 3
(B) What it priority inversion problem in inter process communication? How
to solve it?
4
(C) Explain SJF process scheduling algorithm with example 7


OR
Q-3 (A) Define the following term.
1) Critical Section 2) Waiting Time 3) Race condition
3
(B) Briefly describe SCAN 4
(C) How does a parent process create a child process? How does a parent
process create an ordinary pipe (anonymous pipe) for communicating
with child process? Write the steps.
7



Q-4 (A) What are system calls? What is application programming interface? 3
(B) Which schedules algorithm result in starvation? 4
(C) Explain the use of Banker?s algorithm for multiple resources for deadlock
avoidance with illustration
7


OR
Q-4 (A) Which three are Page Replacement Algorithms? Discuss it in terms of
page faults.
3
(B) What is I-node? Explain in detail. 4
(C) Which are the necessary conditions for Deadlock? Explain Deadlock
recovery in brief.
7



Q-5 (A) Write a Shell Script to find largest among the 3 given number. 3
(B) What is RAID? Explain in brief 4
(C) Explain the following commands in UNIX:
7
suid, wall, man, finger, ls, cat, ps


OR
Q-5 (A) What is called segmentation? How it differs from paging? 3
(B) What is the access control list? Explain in brief. 4
(C) What is Paging? What is Page Table? Explain the conversion of Virtual
Address to Physical Address in Paging with example.
7
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