Question Discussion & Solution

MCQ

The aim of creating page replacement algorithms is to ____________

replace pages faster

increase the page fault rate

decrease the page fault rate

to allocate multiple pages to processes

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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

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If no frames are free, _____ page transfer(s) is/are required.

one

two

three

four

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There is a set of page replacement algorithms that can never exhibit Belady

queue algorithms

stack algorithms

string algorithms

none of the mentioned

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Virtual memory is normally implemented by ________

demand paging

buses

virtualization

all of the mentioned

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A multilevel page table is preferred in comparison to a single level page table for translating virtual address to physical address because ____________

it reduces the memory access time to read or write a memory location

it helps to reduce the size of page table needed to implement the virtual address space of a process

it is required by the translation lookaside buffer

it helps to reduce the number of page faults in page replacement algorithms

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Introduction to Operating System

Types

Services

Structures

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CPU Scheduling

Process Synchronization

Memory Management

Storage Management

Input Output Systems

Networking

Distributed Operating System

Protection and Security

Unix

Linux

MS Windows

Mixed

Operating Systems Overview

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Finding and Processing Files

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