Chapter 3 : System Development Life Cycle

Question 1

What is System Development Life Cycle ( SDLC ) ?

Answer 1

1. An attempt to establish structured approach to systems analysis and design

Question 2

What concept that Sructured Analysis used?

Answer 2

1. System Development Life Cycle ( SDLC )

Question 3

What is Structured Analysis used for?

Answer 3

1. To plan and manage the system development process

Question 4

What does the SDLC describes?

Answer 4

1. Activities and functions that all system developers perform

Question 5

What does Systems Development Life Cycle also known as?

Answer 5

1. Applications Development Cycle

• An organized approach used in organizations to develop an information system

Question 6

What life cycle is a traditional methodology?

Answer 6

1. Systems Development Life Cycle

Question 7

What life cycle is normally used on large projects?

Answer 7

1. Systems Development Life Cycle

Question 8

What is the periods for Systems Development Life Cycle?

Answer 8

1. Require extensive development periods more than 1 year

Question 9

What is the disadvantages for Systems Development Life Cycle?

Answer 9

1. An expensive approach considering the money, time and effort put in

Question 10

List out 5 steps of SDLC model

Answer 10

1. System Planning
2. System Analysis
3. System Design
4. System Implementation
5. System Security and Support

Question 11

How to begin with Systems Planning?

Answer 11

1. Begins the process with system request which describes problems or desired changes in an IS or a business process

Question 12

What is the purpose of Systems Planning?

Answer 12

1. Perform a preliminary investigation to evaluate and IT related business opportunity and problem

Question 13

Why preliminary investigation is a critical step in Systems Planning?

Answer 13

1. Because the outcome will affect the entire development process

• Deliver Preliminary Investigation Report

Question 14

WHat is the purpose of Systems Analysis?

Answer 14

1. Build a logical model of the new system

Question 15

How to start Systems Analysis?

Answer 15

1. Creating requirement modelling which to investigating business processes and document new system

• Perform fact-finding techniques such as interview, survey
• Deliver System Requirements Document

Question 16

How to start Systems Design?

Answer 16

1. Create a physical model that satisfies all documented requirements for the system

Question 17

What is crucial in Systems Design? ( 2 )

Answer 17

1. Management
2. User Involvement

Question 18

List out 2 tasks on Systems Design

Answer 18

1. Design User Interace
2. Identify outputs, inputs and processes

Question 19

List out 3 task in systems implementation and what it delivers?

Answer 19

1. New System is constructed
2. Progeams are written, tested and documented
3. System is installed

• Delivers completely functioning and documented information system

Question 20

What does a well-designed system must have? ( 4 )

Answer 20

1. Secure
2. Reliable
3. Maintainable
4. Scalable

Question 21

What does Maintenance changes? ( 2 )

Answer 21

1. Correct errors ( Bugs )
2. Adapt to Changes in the environments ( New Tax Rates )

Question 22

What does Enhancements provide?

Answer 22

1. New features and benefits the objective during this phase is to maximize return on the IT investment

Question 23

What does security controls safeguards?

Answer 23

1. Safeguard the system from both external and internal threats

• Most information systems need to be updated significantly replaced after several years

Question 24

What is the definition of Systems Development Methodology?

Answer 24

1. A standard process followed in an organization to conduct all the steps necessary to analyze, design, implement & maintain IS

Question 25

What is the importance of Systems Development Methodology?

Answer 25

1. To ensure consistency in management of projects 2. To ensure easier estimation of project times and costs 3. To eliminate those causes of unsuccessful system development – e.g. a more understandable process 4. Reduce time & cost 5. Interact & encourage user involvement 6. To improve the quality of work & system 7. Produce complete & accurate design specification and documentation 8. Meet user requirement

Question 26

IS Waterfall Methodology = SDLC?

Answer 26

1. No

Question 27

What is the main problem of Waterfall Methodology? ( 3 )

Answer 27

1. Inflexible division of a project into separate stages 2. Commitments made earlier on and it is difficult to react to changes in requirements 3. Unsuitable if requirements are not well understood or likely to change

Question 28

List out other Development Methodologies ( 3 )

Answer 28

1. Agile Method 2. Prototyping Method 3. Spiral