BCA (3) Assignment_2011

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BACHELOR OF COMPUTER

APPLICATIONS

(BCA)

ASSIGNMENTS

Year, 2011

(3rd Semester)

CS-63 CS-05

SCHOOL OF COMPUTER AND INFORMATION SCIENCES

INDIRA GANDHI NATIONAL OPEN UNIVERSITY

MAIDAN GARHI, NEW DELHI – 110 068

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BCA/ASSIGN/III/YEAR/2011



CONTENTS

Course

Code

Assignment No. Submission-Schedule Page No.

For Jan-June

Sess

ion

For July-Dec

Sessi

on

CS-63 BCA(3)-63/Assignment/201130th April, 2011 30th October,2011

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CS-05 BCA(3)-05/Assignment/2011 30th April, 2011 30th October,2011 4

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Course Code : CS-63

Course Title : Introduction to Software

Assignment Number : BCA(3)-63/Assignment/2011

Maximum Marks : 25

Last Date of Submission : 30th April, 2011/30th October, 2011

There are six questions in this Assignment. Answer all the questions. You may use

illustrations and diagrams to enhance explanation.

Question 1: Explain the three main purposes of an operating system? What is layered

approach to OS design? Also, describe its advantages and disadvantages.

(4 Marks)

Question 2: Write a shell program to generate the first 25 prime numbers.

(4 Marks)

Question 3: What is ‘Mutual Exclusion’? Write pseudo code to implementmutual exclusion using:

(i) Test and Set instruction and

(ii) Swap instruction

(4 Marks)

Question 4: Consider the following set of processes:

Process Burst time (ms)

P1 10

P2 29

P3 3P4 7

P5 12

Evaluate the performance of FCFS, SJF and RR (Quantum = 10 ms)algorithms for scheduling the above processes.

(3 Marks)

Question 5: Write a shell program to cipher all the text/content in any text document in

the current working directory and also use another shell program to

decipher it to read. Use any scheme for ciphering.

(6 Marks)

Question 6: Write the UNIX commands for the following tasks:

• find lines common to two or more files

• compare files but stops at first occurrence of a difference

• show differences of two files

• list all jobs in the waiting queue

(4 Marks)

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Course Code : CS-05

Course Title : Elements of System Analysis and Design

Assignment Number : BCA (3)-05/Assignment/ 2011

Maximum Marks : 25

Last date of Submission : 30th

April, 2011/30th

October, 2011

There are three questions in this assignment. Answer all the questions. You may use

illustrations and diagrams to enhance your explanations.

Question 1: Explain how the existence of remote users might complicate informationsystem design. Describe a system in which you might be considered a

remote user.

(10 Marks)

Question 2: Define well-formulated educational objectives for your academic career.

Describe at least five constraints that could limit your ability to achieveyour objectives.

(5 Marks)

Question 3: How does a project management life cycle (or process) contribute to an

organization’s ability to achieve CMM level 5 certification?

(10 Marks)

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BCA (3) Assignment_2011

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