Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2078

Bachelor Level / Third Year / Fifth Semester / Science

B.Sc in Computer Science and Information Technology (CSC326)

(System Analysis and Design)

Full Marks: 60

Pass Marks: 24

Time: 3 Hours

Candidates are required to give their answers in their own words as for as practicable.

The figures in the margin indicate full marks.

Section A

Long Answers Questions

Attempt any TWO questions.
[2*10=20]
1.
What is system development life cycle (SDLC)? Explain each phase of SDLC in detail.[10]
2.
Assume monetary benefits of an information system of \$70,000 the first year and increasing benefits of \$10,000 a year for the next four years; one-time development costs of \$90,000, and recurring costs of \$40,000 per year over the duration of the system's life. The discount rate for the company was 1! percent. Using a five-year time horizon, calculate the net present value of these costs and benefits. Also, calculate the overall return on investment and then present a breakeven analysis. At what point does breakeven occur?[10]
3.
What is conceptual data model? How do you gather information for conceptual data modelling? Draw an ER diagram for a retail store in a mall which sells different items to its customers.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
What is system analysis and design? Why is it important for developing information systems? [5]
5.
Why do we need CASE tool during system development? What are different components of CASE tool? [5]
6.
What is project management? Explain some activities and skills of a project manager. [5]
7.
Explain the process initialing and planning information system development project in brief. [5]
8.
How can you use prototyping for determining system prototyping requirements? Compare throwaway with evolutionary prototyping. [5]
9.
What is the purpose of database design? Compare logical design with physical design. [5]
10.
What is testing? Explain any four different testing techniques. [5]
11.
What is class diagram? Explain class diagram with suitable example. [5]
12.
Write short notes on: a. Agile development b. Decision tree [5]