03000EC366052006 Pages: 2

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Max. Marks: 100

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APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Sixth Semester B.Tech Degree Regular and Supplementary Examination July 2021

Course Code: EC366
Course Name: REAL TIME OPERATING SYSTEMS
PARTA
Answer all questions, each carries 15 marks.

Describe the microkernel and exokernel architecture of operating systems.
Compare FCFS and Round Robin scheduling algorithms.
Explain the multilevel feedback queue scheduling algorithm.
Give a detailed description of the evolution of operating system.
Schedule the following processes with FCFS and SJF algorithm. Compare their
performances in terms of average waiting time and turnaround time. Assume all

processes arrived at the same time.

Process Burst Time (mS)

Discuss the functions of operating system.
Explain the different multiprocessor scheduling algorithms.
PART ‏تا‎

Answer any two full questions, each carries 15 marks.
Explain the readers — writers problem in process synchronization.
Discuss the different methods for preventing deadlock.
Explain the different types of semaphores used for process synchronization
Describe how relocation is implemented with hardware support
Define deadlock. How the system detects deadlock.
For the given page reference string calculate the fault rate if First-in First-out

algorithm is used. 0,1,4,3,2,1,5,7,3,5,7,1,0,1

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Duration: 3 Hours

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