Operating System Question Paper of 3rd Semester BSC(IT) Download Previous Years Question Paper 5

Roll No.

Total No. of Questions : 07

B.Sc. (IT) (Sem.–3rd)

OPERATING SYSTEM

Subject Code : BS-203

Paper ID : [B0410]

Time : 3 Hrs.

INSTRUCTION TO CANDIDATES :

1. Section –A, is Compulsory.

2. Attempt any four questions from Section-B.

Section –A

1.     Answer briefly

a.     What is a system call and what is its use?

b.     Draw and explain process state diagram.

c.      What is Belady’s anomaly?

d.     Define locality of reference.

e.      What is a semaphore?

f.       What is a partition?

g.     What is the seek time?

h.     What are the necessary conditions for a deadlock?

i.       How two level directory structures differ from single level directory?

j.       Differentiate between system threats and program threats?

Section –B

2.     What is operating system? Explain different types of the operating system.

3.     Explain different page replacement techniques in virtual memory.

4.     What is disk scheduling? Explain the procedure of selection of best scheduling algorithm.

5.     What is a deadlock? Discuss the deadlock avoidance method and algorithm Illustrate with the examples.

6.     What is process synchronization? Explain different 2 process algorithms for the process synchronization.

7.     Differentiate between CPU scheduling and job scheduling. How can we measure the performance of a scheduling algorithm?