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2003 Course System Programming & Operating System

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Total No. of Questions : 12] [Total No. of Pages : 3 P1853 [3764]-237 B.E. (Common for E & TC / Electronics) SYSTEM PROGRAMMING & OPERATING SYSTEM (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Solve Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8, Q.9 or Q.10, Q.11 or Q.12. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) Define: i) Interpretler. ii) Translator. iii) Assembler. iv) Complier. Give example of each. [8] b) Explain lexical analyzer in complier with example. [10] OR Q2) a) Define: i) Parser. ii) System software. iii) Application software. iv) Operating system. Give example of each. [8] b) Define basic function of complier. Explain different phases of complier with diagram. [10] Q3) a) Explain different data structures used for pass-I assembler. [8] b) Define Macro. Explain how macro expansion is take place if macro is used in program. [8] OR P.T.O. Q4) a) Explain machine dependent & independent features of assembler. b) Explain data structures used for pass-I Macro processor. [8] [8] Q5) a) What is linkers? Explain how linkers works in C complier? Which files gets linked when program is executed? [8] b) Define basic function of loader. Explain relocating loader in details. [8] OR Q6) a) What is loader? Draw the flow chart for loader & explain it briefly. [8] b) Explain the concept of direct linking loader. [8] SECTION - II Q7) a) Draw the physical overview of computer system & with respect to that explain functions of operating system. [10] b) Define process. Explain any two scheduling policies for processes. [8] OR Q8) a) In following process number & time is given. P1 P2 P3 P4 P5 20 10 25 15 5 units If priority queue is - P3, P1, P2, P5 & P4. Process : Time : Calculate average time to complete for scheduling policies i) FCFS. ii) Shortest job first. iii) Priority based scheduling. FCFS & SJF is non-preemptive. Comment on result. [10] b) What is process context switching? Explain process control block. [8] Q9) a) What are different file operations & how the file is protected? [8] b) Explain contiguous memory allocation & non-contiguous memory allocation. [8] OR Q10) a) Explain the concept of memory management using paging. [8] b) Explain file indexing & explain how file is accessed. [8] [3764]-237 2 Q11) a) Explain how I/O devices communicate with CPU? What is role of operating system to manage I/O devices? [8] b) Explain physical IOCS in details. [8] OR Q12) a) Explain the different operation involved in device driver. b) Write short on : i) I/O devices. ii) Modes of IO operation. [8] [3764]-237 [8] 3

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