Punjab Technical University 2009-4th Sem B.C.A Computer Application (th) OPERATING SYSTEMS (BC - 404) - Question Paper

Roll No.
Total No. of ques. : [07] [Total No. of Pages : 02]


Paper ID [80218]
(Please fill this Paper ID in OMR Sheet)
BCA (Sem - 4th)
OPERATING SYSTEMS (BC - 404)

Time : 03 Hours Maximum Marks : 60
Instruction to Candidates:
1) Section- A is Compulsory.
2) Attempt any. 4 ques. from part - B.


Section - A (10x2=20)


a) What do you mean by long term dispatcher?
b) What is the principal advantage of multitasking?
c) Differentiate ranging from a program and a process.
d) What do you mean by deadlock detection?
e) describe the concept of external fragmentation.
f) What is compaction and why it is used?
g) What is the difference ranging from local page replacement and global page replacement?
h) What do you mean by inter-process communication?
i) What is the purpose of system program?
j) List 2 main functions of an operating system?

Section - B (4x10=40)

Q2)What is Deadlock? List and discuss 4 necessary conditions for deadlock to occur?
Q3) List and discuss various classifications of operating systems?
Q4)(a) discuss Dining Philosopher issue in process synchronization"
(b) List and discuss various states of a process?
Q5)(a) What do you mean by memory management? Differentiate ranging from physical and logical memory?
(b) discuss the concept of virtual memory in detail?
Q6) (a) What is the need of file management?List various kinds of access methods available in files?
(b) List and discuss various kinds of allocation methods available?
Q7) Write short note on the subsequent :
(a) Authentication.
(b) Security threats.

Earning:   Approval pending.