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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