D 40086 Wo (Pages :2)
‏نو‎

പ எங்கை ககா

SIXTH SEMESTER B.Sc. DEGREE EXAMINATION, MARCH/APRIL 2018

Time

की कक சட (~

ಣಿ

(CUCBCSS—UG)
Computer Science
BCS 6B 183—FUNDAMENTALS OF OPERATING SYSTEM
: Three Hours "Maximum : 80 Marks
Part A
Answer all questions. a

Each question carries 1 mark.
What is throughput efficiency ?
What do you mean by a system call ?
Name the scheduler which selects jobs from a secondary storage device.
What is semaphore ?
What is context switch? - த
If a writer and some other process access the shared object simultaneously, data may become
inconsistent. This synchronization problem is termed as
What is internal fragmentation ?

8. Define the term hit ratio.
9. What do you mean by the term “threat” in operating system security ?

10.

21
12.

13.
14.
15.

What is SQLite ?
9 (10 x 1 = 10 marks)
Part B
Answer all questions.
Each question carries 2 marks.
Explain time sharing operating systems.

What are the various states associated with a process ? Represent these states with the help of a
diagram.
Explain about the critical section problem.
Differentiate between dynamic linking and dynamic loading.
Explain about any two program threats.
(5 x 2= 10 marks)
Turn over