Unit 6- systems development and Decision making

Question 1

reasons to make system changes

Answer 1

• hardware and software upgrade
• job moves/changes (location, skills, etc)
• management changes (new ideas)
• Process flow (make more efficient)
• strategic

Question 2

SDLC- SYSTEMS DEVELOPMENT LIFE CICLE

Answer 2

1. Planning,
2. Analyzing
3. Designing
4. Developing
5. Testing
6. Implementing
7. Maintaining

Question 3

1.Analysis phase

Answer 3

1. identify problems, opportunities, objective.
2. Determining information requirements
3. analyzing systems needs

Question 4

2.Design phase

Answer 4

4. designing the recommended system

5. Developing and documenting software

Question 5

3.Implementation phase

Answer 5

6. testing and maintaining system

7. implementing and evaluating system

Question 6

when to use Waterfall methodology (SDLC)

Answer 6

1. stages completed in order, cannot go back
2. most appropriate systems requirements are clear, well documented, and unlikely to change
3. technology is understood and not dynamic
4. sufficient resources and expertise are available to support the process

Question 7

Build and Fix (SDLC)

Answer 7

• modify until successful
• continuous maintenance
• quick changes

Question 8

Agile Development

Answer 8

• iterative development model
• rapid application adaptive planning
• fast delivery
• continuous improvement
• flexibility in responses to change
• collaborative, cross functional teams

Question 9

Prototyping model steps

Answer 9

• Experimental system, is quickly inexpensively built.
  1. identify users basic requirements
  2. developing the initial prototype
  3. using prototype
  4. revising and enhancing the prototype

Question 10

End user development

Answer 10

• informal method of solutions development by end users.
• Made possible by 4th generation languages
• Enable the end users to develop systems and solutions with little or no assistance from technical specialists

Question 11

What is a system analyst?

Answer 11

• specializes in the analysis, design, and implementation of information systems
• serves and interacts with the users to understand their needs and requirements.
• seldom are involved in development of hardware or software

Question 12

cloud computing

Answer 12

• you have all your data in more then one location
• public
• private
• hybrid

Question 13

implementation methods

Answer 13

• direct
• parallel-(running 2 systems at the same time)
• prototyping
• phased

Question 14

Feasibility Analysis

Answer 14

• whether the solution is financially, technologically, or organizationally feasible.
• whether the proposed system is a good investment
• whether organization can adapt to changes

Question 15

Economic feasibility

Answer 15

total cost of ownership takes into account the total costs over time, including hardware, software, labor, licensing , etc.

Question 16

Thechnical

Answer 16

to determine the technical feasibility of a system, technology and providers need to be compared and limitations identified.

Question 17

operational

Answer 17

provides insight into whether or not the proposed system is compatible with the existing operations of the organization

Question 18

schedule

Answer 18

determines whether the project will be viable once completed.

Question 19

legal

Answer 19

determines the legal aspects and repercussions of the project

Question 20

political

Answer 20

considers how potential stakeholders will respond to the changes from the proposed system. some may not support it