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Posted By: Chones prakash Member Level: Silver Posted Date: 01 Jul 2008
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2008 Bangalore University B.C.A Unix Operating System Question paper
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IV Semester B.C.A. Examination
Unix Operating System
Time : 3 Hours
Max. Marks : 80
Instruction : Answer all the Sections.
SECTION — A
(8x3=24)
Answer any 8 of the following questions.
1. What are the main features of Unix OS.
2. Explain the architecture of Unix system.
3. Explain the use of fork and kill system calls with example.
4. Explain the use of :
i) at
ii) batch
iii) crontab commands.
5. Mention different types of file permission available in Unix OS.
6. Explain the process of multitasking in Unix OS.
7. What is shell ? What are the drawbacks of Bourne shell over C shell ?
8. Explain various types of files in Unix ?
9. Explain a daemon process ?
10. Mention the commands for secondary storage management.
SECTION – B
Answer any four of the following question : (4x14=56)
11. a) Explain how Unix OS stores files on the disks.
b) Write a shell program to find whether a given number is odd or even ? (10+4)
12 a) What is the difference between Unix and DOS operating system.
b) Explain in detail the Unix Kernel System. (4+10)
13. a) Write a note on process scheduling.
b) Explain different stages of a process and its associated Unix system calls. (7+7)
14. a) Explain diffrent loop control structure available in Bourne shell.
b) Write the steps involved in CREAT () system call. (10+4)
15. a) What are the different modes of setting file permissions ? Explain with an example.
b) Write a shell program to find out whether the given string is a polindrome or not. (7+7)
16. a) Explain the main functions of system administrator ?
b) Explain sending and handling mails in Unix. (7+7)
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