InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
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?(a) Yes(b) No(c) Maybe(d) None of the mentionedI had been asked this question in an interview.This interesting question is from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The correct option is (B) No |
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| 2. |
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?(a) 0.90(b) 0.74(c) 0.94(d) 0.80The question was posed to me in an interview for internship.My question comes from Real Time System topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT CHOICE is (C) 0.94 Easy EXPLANATION - NONE. |
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| 3. |
If a set of processes cannot be scheduled by rate monotonic scheduling algorithm, then __________(a) they can be scheduled by EDF algorithm(b) they cannot be scheduled by EDF algorithm(c) they cannot be scheduled by any other algorithm(d) none of the mentionedThe question was asked in an internship interview.I need to ask this question from Real Time System topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT CHOICE is (C) they cannot be SCHEDULED by any other algorithm The BEST explanation: None. |
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| 4. |
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?(a) yes(b) no(c) maybe(d) none of the mentionedI had been asked this question in a job interview.This intriguing question originated from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT CHOICE is (a) yes To EXPLAIN: NONE. |
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| 5. |
In rate monotonic scheduling, a process with a shorter period is assigned __________(a) a higher priority(b) a lower priority(c) higher & lower priority(d) none of the mentionedI had been asked this question in final exam.I'm obligated to ask this question of Real Time System in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT OPTION is (a) a HIGHER priority |
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| 6. |
Rate monotonic scheduling assumes that the __________(a) processing time of a periodic process is same for each CPU burst(b) processing time of a periodic process is different for each CPU burst(c) periods of all processes is the same(d) none of the mentionedI have been asked this question in examination.I would like to ask this question from Real Time System topic in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right ANSWER is (a) PROCESSING TIME of a periodic process is same for each CPU burst |
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| 7. |
The ____________ scheduling algorithm schedules periodic tasks using a static priority policy with preemption.(a) earliest deadline first(b) rate monotonic(c) first cum first served(d) priorityThis question was posed to me during an interview.The question is from Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT OPTION is (B) RATE monotonic The explanation is: None. |
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| 8. |
The scheduler admits a process using __________(a) two phase locking protocol(b) admission control algorithm(c) busy wait polling(d) none of the mentionedThis question was addressed to me during a job interview.This intriguing question originated from Real Time System in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» The correct answer is (C) busy wait polling |
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| 9. |
If the period of a process is ‘p’, then what is the rate of the task?(a) p^2(b) 2*p(c) 1/p(d) pI got this question during an online interview.My question comes from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT CHOICE is (C) 1/p To EXPLAIN I would say: None. |
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| 10. |
To schedule the processes, they are considered _________(a) infinitely long(b) periodic(c) heavy weight(d) light weightThis question was posed to me in an international level competition.I want to ask this question from Real Time System topic in portion Real Time Operating Systems(RTOS) of Operating System |
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| 11. |
T shares of time are allocated among all processes out of N shares in __________ scheduling algorithm.(a) rate monotonic(b) proportional share(c) earliest deadline first(d) none of the mentionedThe question was posed to me during an interview.Origin of the question is Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right ANSWER is (B) PROPORTIONAL share |
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| 12. |
Using EDF algorithm practically, it is impossible to achieve 100 percent utilization due to __________(a) the cost of context switching(b) interrupt handling(c) power consumption(d) all of the mentionedThis question was posed to me during an interview.I need to ask this question from Real Time System topic in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right OPTION is (a) the COST of CONTEXT switching |
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| 13. |
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?(a) Yes(b) No(c) Maybe(d) None of the mentionedI have been asked this question by my school teacher while I was bunking the class.The origin of the question is Real Time System topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT CHOICE is (a) Yes The BEST EXPLANATION: NONE. |
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| 14. |
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?(a) remain the same throughout(b) keep varying from time to time(c) may or may not be change(d) none of the mentionedThe question was asked in an online interview.Asked question is from Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right option is (B) keep VARYING from TIME to time |
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| 15. |
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 ____________(a) 0.90(b) 0.74(c) 0.94(d) 0.80I have been asked this question by my college professor while I was bunking the class.This intriguing question originated from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT CHOICE is (C) 0.94 |
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| 16. |
Earliest deadline first algorithm assigns priorities according to ____________(a) periods(b) deadlines(c) burst times(d) none of the mentionedThe question was posed to me by my college director while I was bunking the class.I need to ask this question from Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT CHOICE is (B) deadlines Explanation: NONE. |
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| 17. |
The technique in which the CPU generates physical addresses directly is known as ____________(a) relocation register method(b) real addressing(c) virtual addressing(d) none of the mentionedI have been asked this question by my school teacher while I was bunking the class.This interesting question is from Real Time System topic in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» The correct OPTION is (b) real addressing |
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| 18. |
Memory management units ____________(a) increase the cost of the system(b) increase the power consumption of the system(c) increase the time required to complete an operation(d) all of the mentionedThis question was posed to me in an internship interview.This interesting question is from Real Time System in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT ANSWER is (d) all of the mentioned |
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| 19. |
What is the priority of a real time task?(a) must degrade over time(b) must not degrade over time(c) may degrade over time(d) none of the mentionedI had been asked this question in my homework.My doubt is from Real Time System topic in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT CHOICE is (b) MUST not degrade over time Explanation: NONE. |
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| 20. |
The amount of memory in a real time system is generally ____________(a) less compared to PCs(b) high compared to PCs(c) same as in PCs(d) they do not have any memoryThe question was posed to me by my school principal while I was bunking the class.My question is taken from Real Time System topic in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT OPTION is (a) LESS COMPARED to PCs Explanation: NONE. |
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| 21. |
Some of the properties of real time systems include ____________(a) single purpose(b) inexpensively mass produced(c) small size(d) all of the mentionedThis question was addressed to me in a national level competition.My question is based upon Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT ANSWER is (d) all of the mentioned To EXPLAIN: NONE. |
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| 22. |
In a ______ real time system, it is guaranteed that critical real time tasks will be completed within their deadlines.(a) soft(b) hard(c) critical(d) none of the mentionedI had been asked this question in an international level competition.My question is taken from Real Time System topic in division Real Time Operating Systems(RTOS) of Operating System |
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| 23. |
Antilock brake systems, flight management systems, pacemakers are examples of ____________(a) safety critical system(b) hard real time system(c) soft real time system(d) safety critical systemand hard real time systemThis question was posed to me during an interview.This is a very interesting question from Real Time System in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right OPTION is (d) safety critical systemand HARD real time system |
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| 24. |
In a safety critical system, incorrect operation ____________(a) does not affect much(b) causes minor problems(c) causes major and serious problems(d) none of the mentionedThis question was posed to me in homework.I need to ask this question from Real Time System in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT answer is (C) CAUSES MAJOR and serious problems Explanation: None. |
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| 25. |
In a real time system the computer results ____________(a) must be produced within a specific deadline period(b) may be produced at any time(c) may be correct(d) all of the mentionedThis question was addressed to me during an interview for a job.My query is from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT option is (a) must be produced within a specific DEADLINE period |
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| 26. |
Priority inversion is solved by use of _____________(a) priority inheritance protocol(b) two phase lock protocol(c) time protocol(d) all of the mentionedThe question was asked in semester exam.The doubt is from Real Time System topic in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right OPTION is (a) priority inheritance protocol |
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| 27. |
The most effective technique to keep dispatch latency low is to ____________(a) provide non preemptive kernels(b) provide preemptive kernels(c) make it user programmed(d) run less number of processes at a timeThe question was posed to me during an interview.My query is from Real Time System in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» Correct answer is (b) PROVIDE PREEMPTIVE kernels |
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| 28. |
The amount of time required for the scheduling dispatcher to stop one process and start another is known as ______________(a) event latency(b) interrupt latency(c) dispatch latency(d) context switchThis question was addressed to me in exam.My enquiry is from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT option is (c) dispatch latency |
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| 29. |
Real time systems need to __________ the interrupt latency.(a) minimize(b) maximize(c) not bother about(d) none of the mentionedI got this question in an interview for internship.I'd like to ask this question from Real Time System topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT choice is (a) minimize To explain I would say: NONE. |
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| 30. |
Interrupt latency refers to the period of time ____________(a) from the occurrence of an event to the arrival of an interrupt(b) from the occurrence of an event to the servicing of an interrupt(c) from arrival of an interrupt to the start of the interrupt service routine(d) none of the mentionedThis question was posed to me in unit test.This interesting question is from Real Time System in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» Right CHOICE is (C) from arrival of an INTERRUPT to the start of the interrupt SERVICE routine |
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| 31. |
What is Event latency?(a) the amount of time an event takes to occur from when the system started(b) the amount of time from the event occurrence till the system stops(c) the amount of time from event occurrence till the event crashes(d) the amount of time that elapses from when an event occurs to when it is serviced.This question was addressed to me in my homework.I'd like to ask this question from Real Time System topic in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» Correct CHOICE is (d) the amount of TIME that elapses from when an event occurs to when it is serviced. |
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| 32. |
Real time systems must have ____________(a) preemptive kernels(b) non preemptive kernels(c) preemptive kernels or non preemptive kernels(d) neither preemptive nor non preemptive kernelsThe question was asked in examination.The query is from Real Time System topic in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT OPTION is (a) PREEMPTIVE kernels The EXPLANATION: NONE. |
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| 33. |
Preemptive, priority based scheduling guarantees ____________(a) hard real time functionality(b) soft real time functionality(c) protection of memory(d) none of the mentionedI got this question in exam.My question is based upon Real Time System topic in portion Real Time Operating Systems(RTOS) of Operating System |
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Answer» Correct answer is (b) SOFT real TIME functionality |
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| 34. |
What is the disadvantage of real addressing mode?(a) there is a lot of cost involved(b) time consumption overhead(c) absence of memory protection between processes(d) restricted access to memory locations by processesI had been asked this question in an online quiz.The doubt is from Real Time System in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» Correct CHOICE is (c) ABSENCE of memory protection between processes |
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| 35. |
VxWorks is centered around ____________(a) wind microkernel(b) linux kernel(c) unix kernel(d) none of the mentionedI got this question in examination.My doubt is from RTOS in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT OPTION is (a) WIND microkernel |
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| 36. |
Which one of the following is a real time operating system?(a) RTLinux(b) VxWorks(c) Windows CE(d) All of the mentionedI had been asked this question by my college professor while I was bunking the class.I'm obligated to ask this question of RTOS in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT ANSWER is (d) All of the mentioned The BEST EXPLANATION: NONE. |
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| 37. |
Time required to synchronous switch from the context of one thread to the context of another thread is called?(a) threads fly-back time(b) jitter(c) context switch time(d) none of the mentionedThis question was addressed to me in my homework.The doubt is from RTOS in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT OPTION is (c) CONTEXT SWITCH time For explanation: None. |
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| 38. |
Time duration required for scheduling dispatcher to stop one process and start another is known as ____________(a) process latency(b) dispatch latency(c) execution latency(d) interrupt latencyI had been asked this question in an online quiz.This intriguing question comes from RTOS topic in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT OPTION is (B) dispatch latency Best EXPLANATION: NONE. |
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| 39. |
The problem of priority inversion can be solved by ____________(a) priority inheritance protocol(b) priority inversion protocol(c) both priority inheritance and inversion protocol(d) none of the mentionedI got this question in exam.My question is based upon RTOS topic in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT OPTION is (a) PRIORITY INHERITANCE protocol |
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| 40. |
In which scheduling certain amount of CPU time is allocated to each process?(a) earliest deadline first scheduling(b) proportional share scheduling(c) equal share scheduling(d) none of the mentionedI had been asked this question by my school principal while I was bunking the class.The query is from RTOS topic in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT option is (b) PROPORTIONAL SHARE scheduling Easy EXPLANATION - None. |
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| 41. |
In rate monotonic scheduling ____________(a) shorter duration job has higher priority(b) longer duration job has higher priority(c) priority does not depend on the duration of the job(d) none of the mentionedThe question was posed to me by my college professor while I was bunking the class.The above asked question is from RTOS topic in section Real Time Operating Systems(RTOS) of Operating System |
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Answer» The CORRECT option is (a) shorter duration JOB has HIGHER priority |
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| 42. |
For real time operating systems, interrupt latency should be ____________(a) minimal(b) maximum(c) zero(d) dependent on the schedulingThis question was posed to me by my school principal while I was bunking the class.I would like to ask this question from RTOS topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» The correct option is (a) minimal |
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| 43. |
Hard real time operating system has ______________ jitter than a soft real time operating system.(a) less(b) more(c) equal(d) none of the mentionedThis question was addressed to me in an online interview.My enquiry is from RTOS topic in chapter Real Time Operating Systems(RTOS) of Operating System |
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Answer» CORRECT choice is (a) less The best I can EXPLAIN: JITTER is the UNDESIRED deviation from the true periodicity. |
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| 44. |
In real time operating system ____________(a) all processes have the same priority(b) a task must be serviced by its deadline period(c) process scheduling can be done only once(d) kernel is not requiredI had been asked this question during an interview.I need to ask this question from RTOS topic in division Real Time Operating Systems(RTOS) of Operating System |
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Answer» RIGHT ANSWER is (b) a TASK must be serviced by its deadline period Best explanation: None. |
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