C-09-CM-403
458
BOARD DIPLOMA
EXAMINATION, (C-05)
MARCH/APRIL 2013
D.C.M.E - IV SEMISTER
EXAMINATION
OPERATING SYSTEMS
TIME: 3
Hours]
[Total Marks :100]
PART - A
10*4=40
Instruction: (1)
answer all question and each question
carries 4 marks
(2) answer should be brief and
straight to the point and shall not exceed
five simple sentences
1. Explain the concept of buffering.
2. List any six components of operating system.
3. Explain briefly the concept of a process
4. Define waiting time and turnaround time.
5. List the necessary conditions for deadlock.
6. What is the concept of dynamic linking?
7. What is paging? Write its purpose
8. Define virtual memory.
9. List the three file allocation methods
10. What is a file? List any four file attributes.
PART- B
12*5=60
Instructions: (1) Answer any five questions
and each question carries 12 marks. (2) The answers should be comprehensive and
the criteria for valuation is the content but not the length of the answer.
11. (a) Explain the two types of operating systems
each with two examples. (b) Explain briefly about distributed systems. List any
two advantages.
12. . (a) Explain the concept of cooperating
processes with two examples. (b) Differentiate preemptive and non-preemptive
scheduling each with one example.
13. (a) Differentiate long-term and short-term
schedulers. 9b) Define semaphore. Explain its operations
POLYTECHNIC DIPLOMA
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