Operating System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 1

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Total No. of Questions : 13]

PAPER ID A0219

BCA (Semester -4th)

OPERATING SYSTEMS

BCA-404

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.       

a.     What are the disadvantages of batch processing system?

b.     What is process state

c.      Describe the function of dispatcher

d.     What is the difference between hard real time systems and soft real time system?

e.      What is the need of operating system?

f.       What is the difference between turnaround time and response time?

g.     Differentiate logical and physical address space

h.     Describe different steps in case of page fault.

i.       What type of fragmentation in three in case of paging and why

j.       What areth disadvantages of FCFS scheduling?

k.     Describe two example of deadlock.

l.       What is the difference between authentication and authorization ?

m.  Differentiate resource allocation graph and wait for graph.

n.     What is semaphore?

o.     What is deadlock avoidance ?

Section –B

2.     What is operating system ? explain its different services. 

3.     Explain different function performed by operating system in multi programming.

4.     What is process control block? Explain with diagram and its contents.

5.     Explain inter process communication with example of producer consumer problem.

6.     Explain scheduling criteria

7.     Explain the difference between multilevel queue scheduling and multilevel feedback queue scheduling.

8.     Describe the paging memory management technique with address translation and relocation .

9.     Explain different allocation methods in files.

10.                        Explain four conditions which are necessary to occur a deadlock

11.                        What is Banker’s algorithm? Make safe sequence by taking any example

12.                        Explain different security threats.

13.                        Explain public key encryption with advantages and disadvantages.