Roll No…..
Total No. of
Questions: 9
PGDCA
(Sem.-1st)
COMPUTER
OPERATING SYSTEM
SUBJECT
CODE:PGDCA-103 (2012 Batch)
PAPER
ID: [B0143]
Time: 3 Hrs. Max.
Marks: 60
Instruction to Candidates:
1. Section-A is
Compulsory consisting of Ten questions carrying Two marks each.
2. Section-B contains
Five questions carrying Five marks each and students has to attempt any Four
questions.
3. Section-C contains
Three questions carrying Ten marks each and students has to attempt any Two
questions.
SECTION-A
1.
Write briefly:
(a) Explain the difference between a program and a
process.
(b) Expand SPOOL.
(c) What are the various memory allocation schemes?
(d) What is a distributed operating system?
(e) Discuss the methods used for authentication.
(f) Explain logical address.
(g) List the three functions of resource management.
(h) What is a kernel?
(i) What do you mean by inter-process communication?
(j) What are the advantages of having a partition?
SECTION-B
2.
The modern day OS are based on
following mechanisms: (Briefly Explain)
(a) Multitasking
(b) Multiprogramming
3.
Differentiate between virtual memory
and physical memory.
4. Differentiate
between pre-emptive and non-preemptive process scheduling algorithms.
5.
Explain TRAP vs INTERRUPT.
6.
Explain the process of segmentation
with the help of an example.
SECTION-C
7. The
modern day operating systems (OS) have
evolved after continuous development. List the important milestones you observe
in the development of modern day OS.
8. What is file system? Explain file
protection and allocation methods.
9. What
is the difference between 1/0 mapped
input/output and memory mapped input/output? What are the advantages and
disadvantages of each?
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