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Q. Define Input - Output operations?
Serial lines, Disks, tapes and other devices should be communicated with at a very low level. The user require only specify the device and the operation to perform on it while the system converts that request into device- or controller-specific commands. User-level programs can't be trusted to access merely devices they should have access to and to access them only when they are otherwise unused.
Difference between cache and associate memory
Define a layer that is not of an IO management module MCS that is Management Control System is not of an IO management module
Indexed allocation Indexed allocation bringing all the pointers together into one location: the index block. Every file has its own index block, which is an array of disk-block
What is an acyclic graph? A tree that has been corrupted by links to other branches, but does not have any cyclic paths in it.
draw a state diagram showing the transissions of a process from creation to termination
Explain about disk scheduling with neat diagram? FCFS Scheduling SCAN scheduling C-SCAN scheduling SSTF scheduling LOOK Scheduling
why we say " OS is a resource allocator" and “OS is a control program"?
explain about design issues of network operating system
scattered resposibi;ity and authority -necessity of operation research
what is difference between file descriptor and file pointer?
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