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Bmit 227:Operating Systems August 2010 Question Paper

Bmit 227:Operating Systems August 2010

Course:Bachelor Of Business Management And Information Technology

Institution: Kabarak University question papers

Exam Year:2010

KABARAK UNIVERSITY
UNIVERSITY EXAMINATIONS
2009/2010 ACADEMIC YEAR
FOR THE DEGREE OF BACHELOR OF BUSINESS MANAGEMENT
& INFORMATION TECHNOLOGY

COURSE CODE: BMIT 227
INSTRUCTIONS:
Note: - Part-A is compulsory, has 40 marks, you can attempt any three questions from part B. Each
question has 20 marks

Part-A
Question One (Marks 40)

a) What is an operating system? How it is related to computer hardware? Marks 2

b) What are the desirable features of operating systems? Explain any six.. Marks 6

c) What are the basic components of computer system? Explain all. Marks 8

d) What is processor register? Explain both User visible registers. Marks 6

e) What is the cache memory? Where does it exist in the system? Marks 3

f) Differentiate between single program operating system and batch operating system.
Marks 4
g) Explain any three objective of the operating system. Marks 6

h) What is the difference between buffering and overlapping? Marks 3

i) What are the system calls? Marks 2

Part-B
Question Two (Marks 20)

a) What is Batch operating system (concurrent operating system)? Explain any three disadvantages
of batch operating system. Marks 4

b) In the round-robin scheduling, why can not start new processes at the front of the queue instead
of at the end? Marks 2

c) What are the four main steps in executing a program instruction? Marks 4

d) What is the different between time sharing system and real time operating system?
Marks 4
e) Explain why memory management algorithms are important. Marks 4

f) Draw and explain memory hierarchy Marks 2

Question Three (Marks 20)

a) Explain any three services provided by operating system. Marks 3

b) What are the different network operating system and distributed operating system?
Marks 4
c) What are the main features of a graphical user interface? Marks 2

d) What are process states? Explain all the states of a process. Marks 5
e) i) What do you understand by file attributes? Marks 2
ii) Explain any two categories of file attributes? Marks 4

Question Four (Marks 20)
a) Explain any five major activities of an operating system in regard to process management.
Marks 5
b) What is process control block (PCB)? Explain any three fields in process table. Marks 5
c) Distinguish between preemptive, non-preemptive and cooperative scheduling methods.
Marks 2
d) How can you avoid external fragmentation? Marks 4
e) Explain any four main major activities of an operating system in regard to file management.
Marks 4

Question Five (Marks 20)
a) Explain any three major activities of an operating in regard to memory-management.
Marks 3
b) What are the advantages of using directories? Marks 2

c) Distinguish between user and dynamically allocated file space. Marks 2

d) What are the main advantages of using deadlock detection instead off prevention or
avoidance? Marks 2

e) Distinguish between disks, file and database servers. Marks 2

f) i) what are the four conditions for deadlock? Marks 4
ii) Explain the prevention of any two conditions. Marks 2
g) Explain any three major activities of an operating system in regard to secondary storage
management. Marks 3

Bmit 227:Operating Systems August 2010 Question Paper

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