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Explain Belady's Anomaly?
Also called FIFO anomaly. Usually, on enhancing the number of frames allocated to a process virtual memory, the process implementation is faster, because fewer page faults happens. Sometimes, the reverse happens, i.e., the execution time enhances even when more frames are allocated to the process. This is Belady's Anomaly. This is true for certain page reference patterns.
VARIABLE PARTITIONING We can differ the partitions and change the location according to the size of the process. Here if a 10k process enters we are able to make a space of
Mention some attractive properties of semaphore? The Semaphores aren't provided by hardware. However they have numerous attractive properties: Machine indep
Q. Advantages and disadvantages of multiprogramming? Advantages 1. High CPU utilization. 2. It appears that many programs are allotted CPU almost concurrently. D
What is Demand paging? Virtual memory is commonly executed by demand paging. In demand paging, the pager brings only those essential pages into memory instead of swapping in a
what are the objective of operating system assignment
What are the allocation methods of a disk space? Methods of allocating disk space which are widely in use are a. Contiguous allocation b. Linked allocation c. Indexed
address binding at load time
I am not getting what you have tried to describe here. Can you elaborate more about this, i will be thankful to you. Vinay
Define a state which is not a fundamental process state Answer: Blocked state is not a fundamental process state
Q. What are the three main activities of an operating system in regard to secondary-storage management? Answer: 1) Free-space management 2) Storage allocation 3) Disk
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