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What is the basic approach of page replacement?
If no frame is free is available, find one that is not presently being used and free it. A frame can be freed by writing its contents to swap space, and changing the page table to show that the page is no longer in memory. Now the freed frame can be used to hold the page for which the process faulted.
Translation Look aside Buffer In a cached system, the base addresses of the last few indexed pages is maintained in registers named the TLB that adds in faster lookup. TLB has
Define semaphore A semaphore is a protected abstract or variable data type that constitutes the classic method for restricting access to shared resources like shared memory in
Recall that condition variables are synchronization primitives that enable threads to wait until a particular condition occurs. Generalizing, the combination of locks and condit
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
Why interrupt can be used? The majority of the different parts of the PC need to send information to and from the processor and they expect to be able to get the processor's at
Define Latency plus seek time The total time to arrange a disk drive mechanism for a block of data to be read from is its Latency plus seeks time
MDEFINE CRITICAL SECTION
what are the objective of operating system assignment
Question 1 Discuss the following with respect to Operating Systems: Operating System Components Operating System Services Question 2 Describe the theory behind Pagin
Several schemes available are as follows: Pipes : One-way communication process through which different process can interact. The problem is that the two processes could have
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