IV SEMESTER B.C.A EXAMINATION MAY/JUNE 2010
O.S SCHEME
COMPUTER SCIENCE
4 BCA - 4 :UNIX OPERATING SYSTEM
TIME:3HOURS MAX.MARKS:80
Instruction : Answer all sections
SECTION-A
Answer any eight of the following questions
1.Explain super block and inode table of unix file system.
2.Explain the usage of the following commands with an example
a) Sort b) Cut
3.Explain the difference between multitasking and multiprogramming.
4.What are the security levels in unix OS?
5.What is a shell ? What are the different types of shells in unix ?
6.Explain the concept of piped process in unix
7,Explain any three file display commands.
8.Explain briefly about unix system variables.
9.What are the feature of unix OS ?
10.Explain any two internal and external commands in unix.
SECTION-B
Answer any four of the following questions 4 X 14 = 56
11.a)Draw the block diagram of unix OS and explain how users can communicate with hardware.
b)Briefly explain unix file system. 10 + 4
12.a) Explain any three looping control structures provided by shell programming with an
examples
b)Write a shell program to add candidate details and print the details. 7 + 7
13.a)Explain the different stages of process and its associated unix system calls
b)Explain the steps involved in child process creation 10 + 4
14.a) Briefly explain sed and awk tools with suitable example
b)write a shell program to check whether a given number is a prime or not 10 + 4
15.a)Give brief account on secondary storage management.
b)Explain piped process with an example. 8 + 6
16.Write a notes on : 6 + 8
a) Role of system administrator.
b)Unix system communication.
O.S SCHEME
COMPUTER SCIENCE
4 BCA - 4 :UNIX OPERATING SYSTEM
TIME:3HOURS MAX.MARKS:80
Instruction : Answer all sections
SECTION-A
Answer any eight of the following questions
1.Explain super block and inode table of unix file system.
2.Explain the usage of the following commands with an example
a) Sort b) Cut
3.Explain the difference between multitasking and multiprogramming.
4.What are the security levels in unix OS?
5.What is a shell ? What are the different types of shells in unix ?
6.Explain the concept of piped process in unix
7,Explain any three file display commands.
8.Explain briefly about unix system variables.
9.What are the feature of unix OS ?
10.Explain any two internal and external commands in unix.
SECTION-B
Answer any four of the following questions 4 X 14 = 56
11.a)Draw the block diagram of unix OS and explain how users can communicate with hardware.
b)Briefly explain unix file system. 10 + 4
12.a) Explain any three looping control structures provided by shell programming with an
examples
b)Write a shell program to add candidate details and print the details. 7 + 7
13.a)Explain the different stages of process and its associated unix system calls
b)Explain the steps involved in child process creation 10 + 4
14.a) Briefly explain sed and awk tools with suitable example
b)write a shell program to check whether a given number is a prime or not 10 + 4
15.a)Give brief account on secondary storage management.
b)Explain piped process with an example. 8 + 6
16.Write a notes on : 6 + 8
a) Role of system administrator.
b)Unix system communication.
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