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Recent questions tagged paging

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UGC NET CSE | August 2016 | Part 3 | Question: 51
An operating system supports a paged virtual memory, using a central processor with a cycle time of one microsecond. It costs an additional one microsecond to access a pa...
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paging
Q.Suppose you have a computer system with a 48-bit logical address, page size of 16KB and 4 bytes per page table entry. If we have a 48MB program such that the entire pro...
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3 3 votes
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OS : page table
Account for the validity and justification about the correctness of this statement" Whatever level page table is always the nuber of bits which are going to refer a frame...
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paging
Suppose you have a computer system with a 48-bit logical address, page size of 16K and 4 bytes per page table entry. If we have a 48MB program such that the entire progra...
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6 6 votes
1 1 answer
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paging
Consider a system using multi level paging environment. Address bits are segregated as follows: Here first 8 bits represent the required bits for first level, next 8 bits...
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2 2 votes
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paging
Consider a processor has virtual address 52 bits, the physical address is 32 bits and the page size is 16KB. Each individual table at any level of the page table occupies...
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2 2 votes
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690
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tanenbaum OS
Compute the run time of a program which has 55.500.000 memory accesses, a TLB hit rate of 75%, and a page fault rate of 0,005. We consider the TLB access time negligible....
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OS : Paging
In a 32-bit machine we subdivide the virtual address into 4 segments as follows: 10-bit8-bit6-bit8 bitWe use a 3-level page table, such that the first 10-bit are for the ...
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4 4 votes
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made easy test
A computer system with 2 level paging scheme in which regular memory access takes 300 nanoseconds and servicing a pagefault takes 500ns. An average instruction takes 200 ...
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#Operating Systems (Silberschatz, Galvin, Gagne) #VirutalMemory #Page325
In this problem I have a doubt that why effective access time is not taken as effective access time = 1 x 200 + p x (8 milliseconds)because even though pages are accessed...
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3 3 votes
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Operating System
Consider a simple paging system with the following characteristics: a page table size of 64 entries of 11 bits (including valid/invalid bit )each and a page size of 512 b...
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UGC NET CSE | December 2010 | Part 2 | Question: 39
Page making process from main memory to disk is calledInterruptionTerminationSwappingNone of the above
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easy and tricky co question
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2 2 votes
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GATE Overflow | Operating Systems | Test 1 | Question: 13
In a paged memory, the page hit ratio is 0.35. The time required to access a page in secondary memory is 100 ns. The time required to access a page in primary memory is 1...
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Operating System
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8 8 votes
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question related to gate 2008_67 (complex question)
Question related to: gate 2008_67Here is the question: https://gateoverflow.in/490/gate2008_67?show=61309#c61309"So, in the given question, a main memory page frame is fe...
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1 1 vote
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operating system-paging
"In a 32-bit machine we subdivide the virtual address into 4 segments as follows:[10-bit 8-bit 6-bit 8 bit]We use a 3-level page table, such that the first 10-bit are for...
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1 1 vote
1 1 answer
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os multilevel paging
I am not able to understand the concept of multilevel paging.plz can someone tell what is stored in 1st level and 2nd level page table and how do we access it??
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4 4 votes
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UGC NET CSE | December 2014 | Part 2 | Question: 39
For the implementation of a paging scheme, suppose the average process size be $x$ bytes, the page size be $y$ bytes, and each page entry requires $z$ bytes. The optimum ...
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3 3 votes
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UGC NET CSE | June 2013 | Part 3 | Question: 59
A job has four pages A, B, C, D and the main memory has two page frames only. The job needs to process its pages in following order:ABACABDBACDAssuming that the page inte...
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1 1 vote
1 1 answer
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#Operating System -> #Paging
I want to divide a page table into 2 page tables (outer and inner). Single page table has 2^20 entries with Page Size of 2^5 Bytes and Page Entry of 4Bytes in Page Table....
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10 10 votes
6 answers 6 answers
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ISRO CSE 2016 | Question: 22
Let the page fault service time be $10$ ms in a computer with average memory access time being $20$ ns. If one page fault is generated for every $10^6$ memory accesses, w...
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3 3 votes
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ISRO CSE 2014 | Question: 70
Dirty bit is used to indicate which of the following?A page fault has occurredA page has corrupted dataA page has been modified after being loaded into cacheAn illegal ac...
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page size vs frame size
What is the page size taken if page size is less than frame size?Take an example page size =4kb and frame size = 8kb ,Then for calculating virtual address space , which p...
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7 7 votes
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ISRO CSE 2014 | Question: 77
What is the size of the physical address space in a paging system which has a page table containing 64 entries of 11 bit each (including valid and invalid bit) and a page...
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3 3 votes
3 3 answers
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TANENBAUM - Memory Management - Paging
A computer has 32-bit virtual addresses and 4-KB pages. The program and data together fit in the lowest page (0-4095). The stack fits in the highest page. How many page ...
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2 2 votes
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Can a page fault be generated due to the absence of the page of inner page table , table for multi level paging ?
Consider, 2 level paging , with Process P, Inner page table PTi, and outer page table PTo.Now we know that P and PTi are divided in various pages but PTo is in 1 page on...
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8 8 votes
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ISRO CSE 2007 | Question: 25
What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?Partitioning...
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9 9 votes
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ISRO CSE 2011 | Question: 24
If the page size in a 32-bit machine is 4K bytes then the size of page table is1 M bytes2 M bytes4 M bytes4 K bytes
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page offset
how to calculate offset of page
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