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2003 Course System Programming & Operating Systems

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Total No. of Questions : 12] P1345 [Total No. of Pages : 2 [3864]-277 B.E. (E & TC) SYSTEM PROGRAMMING & OPERATING SYSTEMS Time : 3 Hours] [Max. Marks :100 Instructions to the candidates: 1) Solve Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, from section I, Q.7 or Q.8, Q.9 or Q.10, Q.11 or Q.12 from Section II. 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) Q5) a) b) SECTION - I What are different components of system software? Define following terms. i) Operating system. ii) Re-entrant code. iii) Language processor. iv) Preprocessor. OR Explain the following term. i) Lexical analyzer. ii) Semantic analysis What are phases of compliers? Explain in brief? [8] [8] [8] [8] Explain the term forward referencing. Explain how forward referencing is handled in single-pass assembler? [8] Explain how the macro call handle inside a macro definition? [10] OR What are advantages & disadvantages of combining macro processor with pass-I of an assembler? [8] With help of neat flowchart explain the pass-II of an assembler. [10] What is program relocation? With suitable example & data structure explain the relocatable code. [8] Name various types of loader & enlist the function of each in brief. [8] P.T.O. Q6) a) b) Q7) a) b) Q8) a) b) Q9) a) b) Q10)a) b) Q11)a) b) Q12)a) b) OR i) Enlist the basic function of a loader. ii) Write down step for the implementation of MS-DOS linker. Explain the following loader. i) Direct linking loader. ii) Dynamic linking loader. SECTION - II Explain the basic functions of O.S. Explain different state of task & PCB. OR Explain preemptive & non preemptive scheduling. How the synchronization is obtained between interacting process. Explain memory allocation for processor. Explain i) Swapping ii) Paging. OR Write down algorithm for page replacement. Explain concept of i) Virtual memory. ii) Demand paging. [4] [4] [8] [8] [8] [8] [8] [8] [10] [8] [10] Explain IO time, access time & transfer time for magnetic tape & disks.[8] [8] Explain devices driver for serial port & parallel port. OR Explain different requests & responses across the PIOCS Interfacing.[8] Explain the algorithm for USB drivers. [8] E [3864]-277 E 2 E

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