MCS-014:SYSTEM ANALYSIS AND DESIGN,JUNE 2006

MCA(REVISED)
TERM-END EXAMINATION
JUNE, 2006

MCS-014:SYSTEM ANALYSIS AND DESIGN

Time:3 Hours Maximum Marks:100
(Weightage 75%)

Q1.(a) What is system?List the various types of systems and explain each of them in detail. 10

(b)Explain the role of system analyst in software development. 5

© Differentiate between the following: 10
(i) Coupling and cohesion
(ii) Decision Tree and Decision Table
(iii) Alpha testing and Beta testing
(iv) Forward engeenering and reverse engineering

(d)Consider the following situation:

A bank offers two types of savings accounts,Type A and Type B.For the Type A account ,the bank pays a dividend on the account balance at the end of each quarter.The balance can be insured.The insured amount gets 8.75% annual interest.The uninsured amount gets 5.00% annual interest.

For the Type B account,dividends are paid monthly on an average daily balance for that month.No dividend is paid for a balance below Rs 2,000/-, otherwise 5% interest is paid on the first Rs 5,000/- , 5.5% on the next Rs 20,000/- , and 7% over Rs 25,000/-.

Draw a decision table and a decision tree for this situation. 15

Q2. (a) What is the feasibility study?Why is it important for the system design?How does the cost benefit analysis contribute in it? 10

(b)Define logical design of the system.How is it performed? Describe the relationship between data mining and logical design.Also,describe a tool for data mining. 10

Q3. (a) What is CASE tool? How are CASE tools important for an organisation? List the advantages and disadvantages of the CASE tools. 7

(b)What is the importance of studying the maintenance of the systm? Explain the various types of system maintenance in SDLC. 9

© Explain information security architecture, with the help of a suitable diagram. 4

Q4 (a) What are the risks and threats involved in the sytem security? Also, briefly describe 3 risks and 3 threats. 10

(b)What are the methods for gathering the usre requirements? What problems are encountered when using these methods? 10

Q5(a). Explain five components required to construct a DFD. 5

(b)Construct the zero level and first level DFDs for the problem of "on line examination". 7

©.Explain four reasons for the need of documentation of a system. 8