Question Discussion & Solution

MCQ

Thrashing _______ the CPU utilization.

increases

keeps constant

decreases

none of the mentioned

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MCQ

Segment replacement algorithms are more complex than page replacement algorithms because ____________

Segments are better than pages

Pages are better than segments

Segments have variable sizes

Segments have fixed sizes

Discussion

MCQ

Effective access time is directly proportional to ____________

page-fault rate

hit ratio

memory access time

none of the mentioned

Discussion

MCQ

The offset

greater than segment limit

between 0 and segment limit

between 0 and the segment number

greater than the segment number

Discussion

MCQ

In the stack implementation of the LRU algorithm, a stack can be maintained in a manner ____________

whenever a page is used, it is removed from the stack and put on bottom

the bottom of the stack is the LRU page

the top of the stack contains the LRU page and all new pages are added to the top

none of the mentioned

Discussion

MCQ

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

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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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