Download PTU B.Tech 2020 March Civil 4th Sem CS 202 Operating System Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech Civil Engineering (CE) 2020 March 4th Sem CS 202 Operating System Previous Question Paper

1 | M-56513 (S2)-2795
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (Civil) (Sem.?4)
OPERATING SYSTEM
Subject Code : CS-202
M.Code : 56513
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
Q1. Write briefly :
a) Write at least two disadvantages of layered architecture of Operating System.
b) List various CPU scheduling criteria.
c) Define the term semaphores.
d) Differentiate between paging and segmentation scheme of memory management.
e) Differentiate between Logical and physical address space.
f) Define the term seek time.
g) Explain in brief about the term Caching.
h) Explain the term security in brief.
i) Write two advantages of distributed operating system.
j) Write two advantages of LINUX operating system.

FirstRanker.com - FirstRanker's Choice
1 | M-56513 (S2)-2795
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (Civil) (Sem.?4)
OPERATING SYSTEM
Subject Code : CS-202
M.Code : 56513
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt any TWO questions.

SECTION-A
Q1. Write briefly :
a) Write at least two disadvantages of layered architecture of Operating System.
b) List various CPU scheduling criteria.
c) Define the term semaphores.
d) Differentiate between paging and segmentation scheme of memory management.
e) Differentiate between Logical and physical address space.
f) Define the term seek time.
g) Explain in brief about the term Caching.
h) Explain the term security in brief.
i) Write two advantages of distributed operating system.
j) Write two advantages of LINUX operating system.

2 | M-56513 (S2)-2795
SECTION-B
Q2 What is a process? Explain the different states of a process with a diagram. Also explain in
detail the Contents of PCB of a process.
Q3 What are critical sections? Why mutual exclusion required? Explain any one method of
achieving mutual exclusion in detail.
Q4 Describe the access matrix model used for protection purpose.
Q5 Write a detailed note on multiprocessor operating systems.
Q6 Write a detailed note on Interrupts in reference to I/O systems.

SECTION-C
Q7 a) Explain the following CPU scheduling algorithm :
i) Priority scheduling
ii) shortest job first scheduling
b) Explain the following terms :
i) Buffering
ii) Spooling
Q8 Write a detailed note on Paging scheme of memory management.
Q9 Write a detailed note on UNIX operating system with SOLARIS.




NOTE : Disclosure of identity by writing mobile number or making passing request on any
page of Answer sheet will lead to UMC case against the Student.
FirstRanker.com - FirstRanker's Choice