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Write a short note on disk scheduling
One of the responsibities of operating system O/S is to use the hardware efficiently. Whenever a process requires I/O to or from the disc it issues a system call to the operating system. The request state severer pieces of information:
If the disk controller and drive are available the request can be serviced immediately. If the controller or drive is busy any new request for service will be placed on the queue of pending request for that drive. For a multiprogramming system with several processes the disk queue may often have several pending requests. Therefore when request is accomplish the operating system chooses which pending request to service next.
Q. Presume that a system is in an unsafe state. Illustrate that it is possible for the processes to complete their execution without entering a deadlock state. Answer: An unsaf
Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
why we say" OS is a resource allocator" and “OS is a control program"?
Ask question #Minimuexplain the programable clock modes in a computer system m 100 words accepted#
1. Problem Domain You will be considering the Wumpus world introduced in Russell and Norvig (2009) Chapter 7. For this programming assignment you'll use Prolog's ability to do in
What are the disadvantages of swapping technique used in pre-3BSD UNIX systems? If there is excessively much memory contention, processes are swapped out until sufficient
i need to complete project on lan architceture RAIDs etc
What is process control block? Every process is represented in the OS by a process control block. It has many pieces of information associated with an exact process.
Explain Deadlock Prevention-Resource allocation graph allocation Resource allocation graph algorithm : Using this algorithm we are able to actually know if there exists in th
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