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2003 Course Computer Techniques & Applications

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Total No. of Questions :12] P1084 [Total No. of Pages : 2 [3864]-290 B.E. (Instrumentation & Control) COMPUTER TECHNIQUES AND APPLICATIONS (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables slide rule,Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. Q1) a) b) Q2) a) b) Q3) a) b) Q4) a) b) SECTION - I List and explain the five states through which a process may go during its execution. [10] Explain the following with respect to process scheduling. [8] i) Long term scheduler. ii) Short term scheduler. iii) Context Switching. iv) Mid term scheduler (with a diagram). OR What is the function of the CPU scheduler? Explain the CPU scheduling criteria. [8] List the various services offered by Operating Systems. [10] If there are 4 free frames, find the number of page faults for the reference string: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5, for page replacement algorithms mentioned below. i) FIFO [3] ii) Optimal [3] iii) LRU [3] With the help of neat diagram,explain the concept of thrashing. [7] OR With neat diagrams explain the following page table structures. [8] i) Hierarchical paging. ii) Inverted page table structure. List the various file allocation methods and explain the working with neat diagrams. [8] P.T.O.

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