0 votes 0 votes Consider the system which has virtual address of 36 bits and physical address of 30 bits and page size of 8 KB, page table entry contain 1 valid bit, 2 protection bit and 1 reference bit. Then the approximate page table size in (MB) is ________. Operating System operating-system paging virtual-memory + – pream sagar asked Jan 23, 2019 • recategorized Jul 17, 2022 by Shubham Sharma 2 pream sagar 708 views answer comment Share Follow See all 8 Comments See all 8 8 Comments reply Show 5 previous comments Swapnil Naik commented Jan 24, 2019 reply Follow Share Okay got it. 0 votes 0 votes Fyse commented Jan 24, 2019 i edited by Fyse Jan 24, 2019 reply Follow Share I think Page Table Entry should be padded. A similar question was asked in Gate which is as below. https://gateoverflow.in/739/gate2001-2-21 (Without padding the answer would have been 1.75 MB and using padding the answer is 2 MB) Also in many practical implementations, the Page table entry is rounded up as it is said in the below link. https://stackoverflow.com/questions/47525296/how-is-the-size-of-a-single-page-table-entry-affected-when-the-page-size-changes 0 votes 0 votes gauravkc commented Jan 24, 2019 reply Follow Share Agreed, Memories are word addressable. If the entries are not padded, accessing them will be difficult as the starting point of entry will be in between somewhere in a byte and not at the beginning at byte. 1 votes 1 votes Please log in or register to add a comment.
