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Bit 1106 Operating System Question Paper

Bit 1106 Operating System

Course:Bachelor Of Science In Information Technology

Institution: Kca University question papers

Exam Year:2014

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 1106 OPERATING SYSTEM
DATE: AUGUST, 2014
TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE
a) Explain the following terms:
i) Clock Interrupt
[2 Marks]
ii) Trap [2 Marks]
ii) Device driver [2 Marks]
iv) Critical race condition
[3 Marks]
b) Describe the function of the kernel in memory management.
[5 Marks]
c) Briefly explain five factors to consider when selecting a file design method
[5 Marks]
d) With the aid of diagrams describe the three and five process states [6 Marks]
e) Discuss the functions of the high level scheduler. [5 Marks]
QUESTION TWO
a) Distinguish between deadlock and starvation.
[4 Marks]
b) With the aid of a diagram, explain the concept of segmentation as used in memory
management scheme.
[4 Marks]
c) Describe the objectives of I/O management.
[5 Marks]
d) Discuss the following scheduling algorithms
i) FIFO
[1 Mark]
1
ii) Shortest remaining time next iii) Shortest job first
e)
[1 Mark]
[1 Mark]
Describe the operation of semaphore
[4 Marks]
QUESTION THREE
a) Explain the following terms with respect to scheduling and performance
maximization:
(i) Throughput [2 Marks]
(ii) Turnaround time [2 Marks]
(iii) Response time
[2 Marks]
b) Identify the different operating system structures.
[5 Marks]
c) Give the benefits of Direct Memory Access (DMA) in I/O device management.
d) Briefly explain five factors that may lead to a process switch.
[4 Marks]
[5 Marks]
QUESTION FOUR
a) Explain the following with reference to file management;
i) file security [2 Marks]
ii) file integrity [2 Marks]
iii) File map [2 Marks]
b) Give the benefits of using directories in the file system [6 Marks]
c) Discuss in detail four file organization methods. [8 Marks]
QUESTION FIVE
a) Security goals of any computer system are decided by its security policies. Briefly
explain three computer security goals that can be set in an operating system. [6 Marks]
b) State and explain four types of security threats to consider when designing and
implementing any operating system.
[8 Marks]
c) Describe the functions of process control block.
2
[6 Marks]

Bit 1106 Operating System Question Paper

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