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1。State the objectives of an OS when implementing multiprogramming.
2。What is mean by round-robin scheduling.
3。Explain why road-robin scheduling is a suitable strategy in an interactive multiprogramming system.
4。Explain how the operating system of a computer users partitioning to manage
virtual memory.
5。A word processor operator selects word in a document and formats it to bold lettering. There is an appreciable delay before the action is carries out. The next time bold is selected, it takes effective immediately. Explain why this happens in terms of virtual memory.
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Explain how the operating system of a computer users partitioning to manage virtual memory.
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Define deadlock. What causes it and how might the OS recover from a deadlock situation.
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Two program A and B are running in a multiprogramming environment. Program A outputs much data to printer. Program B produces very little output. Describe a suitable scheduling policy in this case, explaining your reasons.
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An airline booking system makes use of a real-time OS. Define real-time and explain why it is necessary in the airline booking system.
This is a mechanism that interrupts at fixed intervals of real time, and is needed for accounting and scheduling purposes. In some systems multiprogramming makes use of a real-time clock which initiates interrupts to the operating system allowing it to allocate timeslices to programs. This technique can also be used to share CPU time among a number of a multi-access environment. -
How does spooling works. Identify the benefits of spooling.