2. - Christian Eminent

Christian Eminent College

(An Autonomous Institution)

Computer Science & Electronics Department

Class:

MSC
-
CS
-

I
Semester



Theory Assignment

Subject: Operating System
s

UNIT
–

I

1.

Define Operating System? Explain various functions of operating system?

2.

What are Schedulers? Explain in brief the various levels of schedulers.

3
.

What is Real Time Operating System? Explain Soft & Hard RTOS?

UNIT
–

II

4

Explain the following dynamic memory allocation algorithm with an
example of each: (i) First fir
(ii) Best fit (iii) Worst fit.

5

How many page faults occur for FIFO, LRU & Optimal page replacement
algorithm for the following reference string, with 3 page frames?


1,2,3,4,1,2,5,1,2,3,4,5

6

What is Demand Paging?
Differentiate between paging & segmentation
techniques for memory management?

UNIT
–

II
I

7

What is
Process
? Ex
plain Process States with suitable diagram
?

8

With reference to following set of processes, determine Average Waiting
Time & Average Turnaround

Time by using SJF, SRTF & FIFO?

Process

Arrival Time

Burst Time

P0

1

25

P1

3

7

P2

5

6

P3

10

10


9

What is Deadlock? Explain necessary conditions for deadlock?

10

Consider the following system
-


Allocation

Max

Available

A

B

C

A

B

C

A

B

C

P0

0

1

0

7

5

3

3

3

2

P1

2

0

0

3

2

2


P2

3

0

2

9

0

2

P3

2

1

1

2

2

2

P4

0

0

2

4

3

3

Find the safe sequence for the process, determine is the system in safe state
or not?

Note:

1. Students have to submit their assignments strictly on:

2. Assignments must be

hand written.

3. Students must come prepared for viva voce at the time of submission of assignment

4. Every page of Assignment must
contain page number and Student Name
.



Prof. Y. S. Chouhan


Mr.
Vishal Kadam


(HOD, Comp. Sc. & Elex.)









(Subject Faculty)