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Q. Is disk scheduling except FCFS scheduling useful in a single-user environment? describe your answer.
Answer: In a single-user environment the I/O queue typically is empty. Requests in general arrive from a single process for one block or for a sequence of consecutive blocks. In these cases the FCFS is an economical method of disk scheduling. However LOOK is nearly as easy to program and will give much better performance when multiple processes are performing concurrent I/O such as when a Web browser retrieves data in the background while the operating system is paging as well as another application is active in the foreground.
We are use to using variables within C without thinking about where they are stored. Most variables are dynamic i.e. can change, therefore they are stored in Ram, unlike a program
Question 1 Explain the following with respect to Resource Management in Distributed Systems- Task assignment Approach Load - Balancing Approach Load - Sharing Approach
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Q. What are two dreadful problems that designers should solve to implement a network-transparent system? Answer: One such issue is making all the processors as well as storag
What are the objectives of operating system? Objectives of OS 1. Convenience: An OS makes a computer more suitable to use. 2. Efficiency : An OS allows t
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Explain what semaphores are, their usage, implementation given to avoid busy waiting and binary semaphores. Semaphore definition Usage for mutual exclusion and process synch
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Q. More than one disk drive is able to be attached to a SCSI bus. Especially a fast wide SCSI-II bus can be connected to at most 15 disk drives. Remember that this bus has a bandw
Q. To build a vigorous distributed system you must know what kinds of failures can occur. a. List three possible kinds of failure in a distributed system. b. State which of
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