a. Race condition problems can be solved through mutual exclusion. Describe any three mechanisms that
can be used to achieve mutual exclusion by sleep and wake up. (6 Marks)
b. Seek operation is a very important concept in file management. Using an example explain why seek
operation is not required in sequential access, what is its relevance. (3 Marks)
c. Operating systems are indispensable in the development of the state-of-the-art technology. In support of
this statement discuss the functions of operating systems showing its contribution in the technological
revolution. (8 Marks)
d. During process execution operating system implements a process control table (PCB). Outline any three
contents of a PCB. (3 Marks)
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