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Which of these is NOT a likely benefit of demand paging in a virtual memory system? Less physical memory is needed to run all processes. O Less CPU is spent in memory management. O Less I/O is incurred. O More processes can run simultaneously.

Which of these is NOT a likely benefit of demand paging in a virtual memory system? Less physical memory is needed to run all processes. O Less CPU is spent in memory management. O Less I/O is incurred. O More processes can run simultaneously.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Computer Science Which of these is NOT a likely benefit of demand paging in a virtual memory system? Less physical memory is needed to run all processes. O Less CPU is spent in memory management. O Less I/O is incurred. O More processes can run simultaneously. Assume that we have demand-paged virtual memory with single-level paging and that the page-table is stored in memory. The probability of a TLB hit is 90%. The probability for a page-fault is 0.1%. It is given that the page to be replaced is dirty twenty percent of the time. What is the probability that a memory reference leads to a TLB miss but not a page fault? O 89.1% O 9.0% O 9.9% O 50% Consider a system where a PTE contains both the referenced and modified bits represented as <referenced, modified>. For a page replacement algorithm that employs enhanced second chance, which of these combinations represent the best candidate for page replacement? O <0,0> O <0,1> O<1,0> O 50% Consider a system where a PTE contains both the referenced and modified bits represented as <referenced, modified>. For a page replacement algorithm that employs enhanced second chance, which of these combinations represent the best candidate for page replacement? O <0,0> O <0,1> O <1,0 > O<1,1 > please help me with these guestions OOOO
Transcribed Image Text:Computer Science Which of these is NOT a likely benefit of demand paging in a virtual memory system? Less physical memory is needed to run all processes. O Less CPU is spent in memory management. O Less I/O is incurred. O More processes can run simultaneously. Assume that we have demand-paged virtual memory with single-level paging and that the page-table is stored in memory. The probability of a TLB hit is 90%. The probability for a page-fault is 0.1%. It is given that the page to be replaced is dirty twenty percent of the time. What is the probability that a memory reference leads to a TLB miss but not a page fault? O 89.1% O 9.0% O 9.9% O 50% Consider a system where a PTE contains both the referenced and modified bits represented as <referenced, modified>. For a page replacement algorithm that employs enhanced second chance, which of these combinations represent the best candidate for page replacement? O <0,0> O <0,1> O<1,0> O 50% Consider a system where a PTE contains both the referenced and modified bits represented as <referenced, modified>. For a page replacement algorithm that employs enhanced second chance, which of these combinations represent the best candidate for page replacement? O <0,0> O <0,1> O <1,0 > O<1,1 > please help me with these guestions OOOO
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