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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.
Question: (a) The actual use and scope groups depend on the mode in which a domain is running. There are two domain modes in which you can run a Windows 2000 domain. List and d
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Define rotational latency and disk bandwidth. Rotational latency is the additional time waiting for the disk to rotate the wanted sector to the disk head. The disk bandwidth is
problems of procedure
People arrive at a barber shop at the rate of one every 4.5 minutes. If the shop is full (it can hold five people altogether), 30% of the potential customers leave and come back i
Q. Regard as a logical address space of eight pages of 1024 words every mapped onto a physical memory of 32 frames. a. How several bits are there in the logical address? b. H
What are the different files attributes? File name:-it's the name of the file. It's the name with which the user identifies. Identifiers:-it's created when a file is created
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We are faced with three major components of the page-fault service time. 1. Service the page-fault interrupts. 2. Read in the page. 3. Restart the processes.
How can a user program disturb the normal operation of the system? a) Issuing illegal I/O operation. b) By accessing memory locations within the OS itself. c) Refusing to
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