Operating System Mcqs

Page No. 40

Using EDF algorithm practically, it is impossible to achieve 100 percent utilization due to __________


athe cost of context switching


binterrupt handling


cpower consumption


dall of the mentioned



A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35., can the two processes be scheduled using the EDF algorithm without missing their respective deadlines?


aYes


bNo


cMaybe


dNone of the mentioned


View Answer Yes

A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35., the priorities of P1 and P2 are?


aremain the same throughout


bkeep varying from time to time


cmay or may not be change


dnone of the mentioned



Earliest deadline first algorithm assigns priorities according to ____________


aperiods


bdeadlines


cburst times


dnone of the mentioned


View Answer deadlines

A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35. Can the processes be scheduled without missing the deadlines?


aYes


bNo


cMaybe


dNone of the mentioned


View Answer No

A process P1 has a period of 50 and a CPU burst of t1 = 25, P2 has a period of 80 and a CPU burst of 35. The total CPU utilization is?


a0.90


b0.74


c0.94


d0.80


View Answer 0.94

If a set of processes cannot be scheduled by rate monotonic scheduling algorithm, then __________


athey can be scheduled by EDF algorithm


bthey cannot be scheduled by EDF algorithm


cthey cannot be scheduled by any other algorithm


dnone of the mentioned



There are two processes P1 and P2, whose periods are 50 and 100 respectively. P1 is assigned higher priority than P2. The processing times are t1 = 20 for P1 and t2 = 35 for P2. Is it possible to schedule these tasks so that each meets its deadline using Rate monotonic scheduling?


ayes


bno


cmaybe


dnone of the mentioned


View Answer yes

In rate monotonic scheduling, a process with a shorter period is assigned __________


aa higher priority


ba higher priority


chigher & lower priority


dnone of the mentioned


View Answer a higher priority

Rate monotonic scheduling assumes that the __________


aprocessing time of a periodic process is same for each CPU burst


bprocessing time of a periodic process is different for each CPU burst


cperiods of all processes is the same


dnone of the mentioned



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