Operating system mcqs virtual memory page replacement algorithms
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What is the Optimal page - replacement algorithm?
Replace the page that has not been used for a long time
Replace the page that has been used for a long time
Replace the page that will not be used for a long time
None of the mentioned
Applying the LRU page replacement to the following reference string. 1 2 4 5 2 1 2 4 The main memory can accommodate 3 pages and it already has pages 1 and 2. Page 1 came in before page 2. How many page faults will occur?
Users ..... that their processes are running on a paged system.
none of the mentioned
A process refers to 5 pages, A, B, C, D, E in the order : A, B, C, D, A, B, E, A, B, C, D, E. If the page replacement algorithm is FIFO, the number of page transfers with an empty internal store of 3 frames is?
What is the reason for using the LFU page replacement algorithm?
an actively used page should have a large reference count
a less used page has more chances to be used again
it is extremely efficient and optimal
all of the mentioned
There are 5 questions to complete.