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Worst Fit Algorithm
Here we obtain the largest space available for the smallest. Therefore after that process entered there will be much more space remaining. In this space we are able to enter other processes.
How free-space is managed using bit vector implementation? The free-space list is implemented as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, th
why we say " OS is a resource allocator" and “OS is a control program"?
Suppose your process starts up, and allocates some memory with malloc(). The allocator will then give part of a memory page to your process. The OS then updates the corresponding p
mention the three problems that mat be caused by wrong initialization and placement of wait() and signal()operations in the use of semaphore
Why is rotational latency usually not considered in disk scheduling? How would you modify SSTF, SCAN, and C-SCAN to include latency optimization? Most disks do not export their
What is a reference string? An algorithm is evaluated by running it on a particular string of memory references and computing the number of page faults. The string of memory re
Explain about demand paging? A demand paging system is same to a paging system with swapping. Processes reside on secondary memory. When we require executing a process, we chan
Explain the difference between internal and external fragmentation. Internal Fragmentation is the area in a region or a page that is not used by the job occupying that region o
Write about critical regions and monitors. Critical region definition Monitor definition Implementation of the conditional-region construct Syntax of monitor Monito
Banker's Algorithm In this analogy Customers ≡ processes Units ≡ resources, say, tape drive Ba
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