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Second chance Algorithm
When the page is chosen the reference bit is checked to see whether it has been referenced before. If that is the case after that it is given a second chance. The page is moved from head to tail as well as its reference bit is made 0. If it has not been referenced then it is removed.
Example Consider 1,2,3,4,3,5,6. Now 1,2,3 are entered into memory as well as when 4 comes 1 is removed, when 5 comes 2 is removed, when 6 comes 4 is removed instead of 3 as 3 has been referenced in among.
How does user specify block to be fetched in direct access? By specifying the relative block number, relative to first block in file, which is block 0.
Define LRU Page Replacement Algorithm LRU policy: LRU expands to least currently use. This policy suggests which we re- move a page whose last usage is farthest from current ti
What is macro expansion
explain in detail about ipc in linux
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Hashed page tables A common approach for handling address spaces larger than 32 bits is to use a hashed page table. Every entry in the hash table having a linked list of elemen
categorize the CPU scheduling algorithms and among them explain the non-preemptive algorithms..
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