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Computer science 2nd year final exam test review
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COSC22UNIVERSIT
Y
UNIVERSITY EXAMINATIONS
SECOND YEAR EXAMINATION FOR THE AWARD OF DEGREE OF BACHELOR
OF SCIENCE IN COMPUTER SCIENCE
SECTION A
Question One Compulsory - (30 marks)
a) State and briefly explain four major functions of an Operating system. (4 marks)
b) Using a diagram, Explain the abstract view of a computer system. (6 marks)
c) Briefly explain the advantages and disadvantages of batch systems. (6 marks)
d) Within the broad family of operating systems, there are generally four types,
categorized based on the types of computers they control and the sort of applications
they support. Explain the various types of operating systems (4 marks)
e) With the aid of a diagram, explain the various process states that exist in the process of
execution of a program. (6 marks)
f) Differentiate between pre-emptive and non-preemptive scheduling, when it comes to CPU
scheduling (4 marks)
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