3456
BOARD DIPLOMA EXAMINATION, (C-09)
Oct/Nov-2012
DCME IV SEMESTER EXAMINATION
OPERATING SYSTEMS
Time : 3
Hours]
[Total Marks: 80
PART-A 10*3=30
Instructions: (1)
Answer all questions and each question caries four marks. (2) Answers should be
brief and straight to t the point and shall not exceed five simple sentences.
1.
What
do you mean by multiprocessor system?
2.
What do you mean by spooling and buffering?
3.
What is meant by shared memory in interprocessor
communication?
4.
List the benefits of multithreading programming.
5.
What are the turnaround time and response time?
6.
Consider a system of four of the same type that
are shared by the three processor each of the needs most two resources. show
that the system is deadlock-free
7.
How is the page number and offset numbers
obtained?
8.
What is the cause of thrashing? How does the
system detect threshing? Once it detects thrashing what can the system do to
this problem?
9.
What information is needed for disk i/o?
10.
List operations to be performed on directories.
PART-B 5*10=50
Instructions: (1) Answer any five questions
and each question caries twelve marks. (2) The Answers should be comprehensive
and criteria for valuation is the Content but not the length of the answer.
11.
Explain the different types of system calls
12.
Explain
the multilevel queue scheduling
13.
Explain the processes of recovery from
deadlocks?
14.
What is the process?
15.
Write about page replacement algorithms
16.
(a) write about the swapping
(b) Write about the single allocation
17. Explain
the disk structure
18. What are
the file operations? Explain them
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