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1997 Course Advanced Unix Programming (Elective II)

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Total No. of Questions : 10] P1607 [Total No. of Pages : 2 [3764] -1096 B.E. (Computer) ADVANCED UNIX PROGRAMMING (1997 Course) (Elective - II) (410251) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Attempt any three questions from section - I and three questions from section - II. 2) Figures to the right indicate full marks. 3) 4) Draw neat diagrams wherever necessary. Make suitable assumptions wherever necessary. SECTION - I Q1) a) b) Q2) a) b) Q3) a) b) Q4) a) b) Explain the execution of fork() call. Which properties are inherited by the child process from the parent process? [8] List and explain the important features of Unix System V file system.[8] What is the roll of macros in Unix Programming? How macros can be used to check the status of the process? [8] How shell script can be used in system administration? [8] Explain the need of background and foreground processes in Unix Programming with proper examples. [8] Why process accounting is needed? How operating system makes the use of it? [8] What are the disadvantages of slow system call? What action is expected to overcome the problems occurred by system call? [8] [8] Describe the architecture of NFS file system. Q5) Write short notes (any three): a) Race Condition. b) Unbuffered I/O. c) System Tuning. d) Job control Signals. [18] P.T.O. Q6) a) b) What is the role of shared memory in group communication? Explain with suitable example. [8] Compare between the simple piles and FIFO. [8] Q7) a) b) List the pros and cons of stream pipes and sockets [8] How many messages a message queue can handle? How these messages [8] are stored? Q8) a) b) Give the advantages and disadvantages of IPC structures. [8] What is the primary motivation behind the development of a RPC system? Give the advantages and disadvantages of RPC. [8] Q9) a) What are the differences between stream and datagram mode provided in socket programming? [8] What is the difference between binary semaphore and general semaphore? How will you make the use of these semaphores? [8] b) Q10)Write short notes on: a) Light weight process. b) Terminal Driver. c) AWK. d) Unreliable Signals. [18] ***** [3764] - 1096 -2-

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