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Posted By: Lenin Member Level: Diamond Posted Date: 30 May 2008
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2007 Indira Gandhi National Open University (IGNOU) Diploma Computer Applications CS02 Introduction to Software - June 2007 Question paper
PGDCA / MCA (I Yr) / BCA
Term-End Examination
CS02 : Introduction to Software
Time: 2 hours
Maximum Marks: 60
Note : Question number 1 is cornpulsory. Attempt any three questions from the rest.
June 2007
PART A
1. (a) Explain the working of a 2-pass assembler in detail. (6)
(b) Write a shell program to copy the contents of file1 to another file2. Also write an algorithm for it. (6)
(c) Explain the client-server model with the help of an example application. (6)
(d) Explain the following concepts in UNIX with an example for each : (6)
(i) filters
(ii) pipes
(iii) file permissions
(e) Explain various stages of systems investigation (6)
2. (a) Explain the concept of 'Buffering' with the help of a diagram (4)
(b) How can compaction be a solution for the external fragmentation problem in memory management? Illustrate with the help of an example. (6)
3. (a) Explain with suitable examples : (5)
(i) inodes
(ii) file structure in UNIX
(b) What do you understand by syntax and sernantic analysis? Explain in detail. (5)
4. (a) What is 4GL? What are its limitations? How can 4GLs help in solving the software problems? (5)
(b) Define the following UNIX commands: (5x1=5)
(i) echo
(ii) cat
(iii) ls
(iv) cc
(v) admin
5. (a) List and explain the mechanism to support the file protection in multiuser environment.
(b) List and explain any five important qualities of a software product. (5)
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