1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
MCA SEMESTER- III • EXAMINATION WINTER 2017
Subject Code: 2630004 Date:02-01-2018
Subject Name: Operating Systems
Time: 10:30 am to 1:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Define Process. List and explain the reasons for process creation and termination.
07

Explain the five state process model and the various queues associated.
07
Q.2

Define interrupt and interrupt handling. Explain the instruction cycle with interrupts.
07

Explain the producer/consumer problem with reference to concurrent processing.
07
OR

Define deadlock with example. Explain deadlock prevention and detection techniques.
07
Q.3

What is dynamic partitioning? Explain first-fit, best-fit and next-fit placement algorithms with examples.
07

What is real-time scheduling? Describe the characteristics of real-time operating systems.
07
OR
Q.3

What is segmentation? How it differs from paging? Explain the address translation in both the cases.
07

What is processor scheduling? Explain round-robin scheduling policy with example.
07
Q.4

What is disc scheduling? Describe different disc scheduling policies in detail.
07

Write short notes on
DMA
File system security
07
OR
Q.4

What is meant by secondary storage management? Discuss different File allocation methods.
07

Write short notes on
Double buffering
File system Architecture
07
Q.5

What is client/server architecture? List its applications and discuss different classes of client/server architecture.
07

List and explain I/O techniques in detail.
07
OR
Q.5

Define cluster. Explain clustering methods with its advantages and disadvantages.
07

Explain different RAID levels in detail.
07