MCS-014:SYSTEM ANALYSIS AND DESIGN,DEC-2005

MCA(REVISED)
TERM-END EXAMINATION
DEC, 2005
MCS-014:SYSTEM ANALYSIS AND DESIGN

1 (a) Briefly describe the phases of a system development life cycle through a diagram.

(B) What is meant by 'Process Specification Tool' ? Describe any two such tools.

© What are the inputs to physical database design? Also, write at least five guidelines for database design.

(d) Briefly explain the four methods of conversion from an existing system to the new system.

2 (a) Define the term 'Documentation' according to ISO/IEC 12207 : 1995. Also, define SRS, and explain the structure of a typical SRS document.

(B) Explain any two of the following
Distributed System
Prototyping
Real time system

3 (a) Define the term Feasibility Study. Describe atleast four types of feasibility analyses.

(B) Explain the six goals of design. Based on the goals, give a set of guidelines for arriving at good design.

4 (a) Define a CASE tool. List three advantages of CASE tools. Explain forward and reverse engineering, with appropriate diagrams.

(B) Explain at least five criteria for form design and report design.

5 (a) What is MIS? List at least four characteristics of MIS. Explain the architecture of MIS, with a diagram.

(B) Define 'Information System Audit'. List three objectives of Audit. List at least five benefits of Audit.

MCS-014:SYSTEM ANALYSIS AND DESIGN, JUNE-2005

MCS-013 DISCRETE MATHEMATICS, DEC -2008

MCS-013 DISCRETE MATHEMATICS, JUNE,2008

MCS-013 DISCRETE MATHEMATICS, JUNE,2006

MCS-013 DISCRETE MATHEMATICS, DEC 2005

MCA (Revised)
Term-End Examination
DecembeR, 2OO5

MCS-013 : DISCRETE MATHEMATICS

l. (a) Write The negaion of the folowing statements:
(i) For al x,x2 < x2=" 2." a =" {1," x4="9,whercx.">,i= 1,2,3,4.

2 (a)A sequence of ten bits (0's and 1's) is randomly generated. What is the probability that at least one of the bits is 0 ?

(b)Find the number of permuiations of the word ATTENDANT.

(c)Write the contrapositive of the statement 'If x is a positive real number, there is a number y
such that y2= x.'

3. (a) Given five points inside a square whose side has length 2, prove that two are within a distance of under root Z of each other.

(b)Prove. that ((p v q -> r) ^ (~p))-> (q -> r) is a tautology.

4. (a) A commitee of three individuals decides a proposal. Each individual votes either yes or no. The proposal is passed it receives atleast two votes. Design a circuit that determines whether ihe proposal pass

(b) Find the domain and range. of the function
-----
|1+x
| -----
\|1-X

where

x takes real values.

(c)State whether the following statement is true or false, Give reasons for your answer.

"For any 3 sets A, B and C, and functions
f: A -> B, g: B -> C such that g of is surjective,
then f and g must be surjecive."

5.(a) How many boolean functions of n variables are there ? Give reasons for your answer.

(b)Check whether the folowing argument is valid, using a truth table.

"if Shalini leaves home belore 9.00 AM or if she takes a taxi, she will reach office in time. She did
leave after 10.00 AM and she did reach office in time. Therefore, Shalini must have taken a taxi.

MCS-13 DISCREATE MATHAMATICS, DEC-2006