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2003 Course Real Time Operating Systems (Elective II)

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Total No. of Questions : 12] P1560 [Total No. of Pages : 3 [3764]-253 B.E. (Electronics) REAL TIME OPERATING SYSTEMS (404212) (2003 Course) (Elective - II) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answers to the two sections should be written in separate answer books. 2) In Section-I attempt Q.1 or 2, Q.3 or 4 and Q.5 or 6 in Section-II attempt Q.7 or 8, Q.9 or 10 and Q.11 or 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) Explain memory requirements in foreground/background and multi tasking kernel. [8] b) What are common methods of obtaining exclusive access to shared resources? Explain with suitable example and diagram. [8] OR Q2) a) Discuss advantages and disadvantages of RTOS. [8] b) Discuss interrupt and interrupt timings for foreground/background, non-preemptive and preemptive kernel. [8] Q3) a) Explain the ready list in uCOSII with following: i) Making a task ready to run. ii) [8] Removing a task from the ready list. iii) Finding the highest priority task ready to run. b) Explain uCOSII initialisation along with variables, data structures and free pools. [8] P.T.O.

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