Wednesday, September 4, 2013

4 BCA 4 UNIX OPERATING SYSTEM MAY/JUNE 2007 QUESTION PAPER

                                  IV SEMESTER B.C.A EXAMINATIONS,MAY/JUNE 2007
                                                                NEW SCHEME
                                                       COMPUTER SCIENCE
                                        UNIX OPERATING SYTEM (4 BCA 4 )

TIME:3HOURS                                                       MAX.MARKS:80

Instructions:All sections are compulsary

SECTION-A

Answer any eight of the following    8 X 3 = 24

1.Whar are the main features of   Unix Operating System ?

2.Whar are the facilites provided by the kernel ?

3.Whar is the difference between an argument and an option ?

    Give an examples  each



4.What do you mean by context of a process ? Explain

5.what is Boot strapping the sytem ?Explain

6. Explain any three file display commands.

7.Explain EXEC () command with any two options.

8.Explain briefly about Unix system variables.

9.Explain briefly about unix system commmunication.

10.Write a shell program to generate the Fibonacci seriers.


SECTION - B

Answer any four  of the following questions:       4 X 14 = 56

11.a) Describe briefly the Unix architecture explaining  the role played by the kernel

       and shell in sharing the workload.

       b)What are the differnet modes of  setting file permisson ? Explain with an
   
         example

     c) Explain lr. lpr  and lprn commands         6 + 5 + 3

12.a) Explain how inodes are stored with a neat Diagram

     b)Explain differnt states of a process with a neat diagram     8 + 6

13.a)Write a shell program to find the sum of the series upto n term

     1 + 1/2 + 1/3 + ..............1/n.
 
    b) What is a filter ? discuss any four filters with an example.

14.a)discuss different loop control constructs provided by shell programming with

    an  example

      b) Using awk, write a menu driven program to create a student database and

          perform the following opeerations.

        i) Adding

          ii) Deleting

       iii) Display                                6 + 8

15. a)What is a system call ? Explain any four file related system calls.

         b)What is the significance of PID  and PPID ?

         c) Explain piped process               8 + 3 + 3

16.a) Explain the main functions of system administrator.

        b) Explain about secondary storage management.           7  + 7

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