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[Winter 2014] ASSIGNMENT
PROGRAM BSc IT
SEMESTER SECOND
SUBJECT CODE & NAME BT0070,
Operating Systems
CREDIT
4 BK ID B0954 MAX. MARKS 60
1. Describe batch operating system.
Explain its advantages and disadvantages. 10
Answer:
In early days computer
work was given on punch cards and then these punch cards behave as input to the
computer. These jobs or batch jobs were then executed by the computer one by
one. So that computers were called as batch computers or batch systems. The work
done by batch systems are in parts
2. Write short notes on:
1. Critical section problem
2. Buffering 5+5 10
Answer:
1. The critical-section problem
A
critical-section is a part of program that accesses a shared resource
(data structure or device) that must not be concurrently accessed by more than
one process of execution. Consider a system consisting of n processes {
p0,p1,……pn-1}. Each process has a segment of code called a critical
3 What are TLBs? Why they are
required in paging? 3+7 10
Answer:
A
translation lookaside buffer (TLB) is a cache that memory management hardware
uses to improve virtual address translation speed. The majority of desktop,
laptop, and server processors
4. Describe the techniques of free
space management of free space list. 10 10
Answer:
The
disk is a scarce resource. Also disk space can be reused. Free space present on
the disk is maintained by the operating system. Physical blocks that are free
are listed in a free-space list. When a file is created or a file grows,
requests for blocks of disk space are checked in the free-
5 What are computer viruses? How do
they affect our system? 3+7 10
Answer:
A
computer virus is written with an intention of infecting other programs. It is a
part of a
6. List and explain the types of
multiprocessor OS.
Answer:
Three basic types of multiprocessor operating systems
are:
·
Separate
supervisors
·
Master / slave
·
Symmetric
Get fully solved assignment. Buy online from website
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