What is a semaphore, Operating System

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Question 1:

a) State the different file attributes and briefly explain the operations that can be performed on each files.

b) What is a semaphore? Describe why it is important.

c) What do you meant by a deadlock? Explain the necessary conditions for a deadlock to occur.

Question 2:

a) One important aspect of Memory Management is "Paging ". Discuss.

b) Explain the Linked Allocation of disk space to files.


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