Operating System Mcqs

Page No. 38

Real time systems need to __________ the interrupt latency.


aminimize


bmaximize


cnot bother about


dnone of the mentioned


View Answer minimize

Interrupt latency refers to the period of time ____________


afrom the occurrence of an event to the arrival of an interrupt


bfrom the occurrence of an event to the servicing of an interrupt


cfrom arrival of an interrupt to the start of the interrupt service routine


dnone of the mentioned



What is Event latency?


athe amount of time an event takes to occur from when the system started


bthe amount of time from the event occurrence till the system stops


cthe amount of time from event occurrence till the event crashes


dthe amount of time that elapses from when an event occurs to when it is serviced.



Real time systems must have ____________


apreemptive kernels


bnon preemptive kernels


cpreemptive kernels or non preemptive kernels


dneither preemptive nor non preemptive kernels


View Answer preemptive kernels

Preemptive, priority based scheduling guarantees ____________


ahard real time functionality


bsoft real time functionality


cprotection of memory


dnone of the mentioned



What is the disadvantage of real addressing mode?


athere is a lot of cost involved


btime consumption overhead


cabsence of memory protection between processes


drestricted access to memory locations by processes



The technique in which the CPU generates physical addresses directly is known as ____________


arelocation register method


breal addressing


cvirtual addressing


dnone of the mentioned


View Answer real addressing

Memory management units ____________


aincrease the cost of the system


bincrease the power consumption of the system


cincrease the time required to complete an operation


dall of the mentioned


View Answer all of the mentioned

What is the priority of a real time task?


amust degrade over time


bmust not degrade over time


cmay degrade over time


dnone of the mentioned



The amount of memory in a real time system is generally ___________


aless compared to PCs


bhigh compared to PCs


csame as in PCs


dthey do not have any memory


View Answer less compared to PCs

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