Operating System Mcqs

Page No. 27

Which one of the following is the address generated by CPU?


aphysical address

✖


babsolute address

✖


clogical address

✓


dnone of the mentioned

✖


View Answer logical address

A memory buffer used to accommodate a speed differential is called ____________


astack pointer

✖


bcache

✓


caccumulator

✖


ddisk buffer

✖


View Answer cache

CPU fetches the instruction from memory according to the value of ____________


aprogram counter

✓


bstatus register

✖


cinstruction register

✖


dprogram status word

✖


View Answer program counter

The first fit, best fit and worst fit are strategies to select a ______


aprocess from a queue to put in memory

✖


bprocessor to run the next process

✖


cfree hole from a set of available holes

✓


dall of the mentioned

✖



In fixed size partition, the degree of multiprogramming is bounded by ___________


athe number of partitions

✓


bthe CPU utilization

✖


cthe memory size

✖


dall of the mentioned

✖



When memory is divided into several fixed sized partitions, each partition may contain ________


aexactly one process

✓


bat least one process

✖


cmultiple processes at once

✖


dnone of the mentioned

✖


View Answer exactly one process

Using transient code, _______ the size of the operating system during program execution.


aincreases

✖


bdecreases

✖


cchanges

✓


dmaintains

✖


View Answer changes

Transient operating system code is code that ____________


ais not easily accessible

✖


bcomes and goes as needed

✓


cstays in the memory always

✖


dnever enters the memory space

✖



The operating system and the other processes are protected from being modified by an already running process because ____________


athey are in different memory spaces

✖


bthey are in different logical addresses

✖


cthey have a protection algorithm

✖


devery address generated by the CPU is being checked against the relocation and limit registers

✓



With relocation and limit registers, each logical address must be _______ the limit register.


aless than

✓


bequal to

✖


cgreater than

✖


dnone of the mentioned

✖


View Answer less than

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