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2003 Course Real Time Operating Systems (Elective II)

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Total No. of Questions : 12] P1314 [Total No. of Pages : 3 [3664]-223 B.E. (Electronics) REAL TIME OPERATING SYSTEMS (2003 Course) (404212) (Elective - II) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to two sections should be written in separate answer books. 2) In section-I attempt Q. 1 or Q. 2, Q. 3 or Q. 4 and Q. 5 or Q. 6. In section-II attempt Q. 7 or Q. 8, Q. 9 or 10 and Q. 11 or Q. 12. 3) Neat diagrams, flow charts must be drawn and well commented pseudo code written wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) a) What is context switching? Give suitable example. b) How priorities are assigned to the task in multitasking system? [6] [5] c) Explain how interrupts are responding in systems. Define interrupt latency interrupt response and interrupt recovery. [6] OR Q2) a) What is critical section? Give suitable example. [6] b) Compare preemptive and non preemptive Kernel. Explore the application of both. [5] c) What is dead lock? Give suitable example. [6] Q3) a) What are the data structures and variables used to handle priority of task for scheduling? [6] b) What is statistic task? How it is initialized. [5] c) What is event in uCOSII. Explain ECB data structure? [6] OR Q4) a) Draw and explain state diagram of task. Show various conditions for transitions. [6] b) Explain and describe TCB data structure in uCOSII. [6] c) How to set and query on system time? [5] P.T.O.

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