1.2.3 Software development - Callum

Question 1

What development methodology should be used for a large, risk-heavy project?

Answer 1

Spiral model- This is due to the vast amount of money that can be invested in risk assessors and prototypes over a long period of time

Question 2

What are the advantages of the Waterfall model?

Answer 2

*easy to understand and follow
*lots of documentation
*usually takes less time because less time is invested into user requirements

Question 3

What are the disadvantages of the Waterfall model?

Answer 3

*It is inflexible- it cannot change if the user requirements change partway through the project
*Doesnt work well for very long projects as each stage will take too long

Question 4

What are the qualities of a good algorithm?

Answer 4

*inputs must be clearly defined
*must always produce a valid output for a defined input
*must be able to deal with invalid inputs
*must always reach a stopping condition
*must be well documented
*must be well commented

Question 5

What type of testing allows end-users to test the program?

Answer 5

Beta testing

Question 6

What is extreme programming?

Answer 6

A programming methodology in which two programmers and an end-user work together to create a program, through having one programmer code and having the other critique the code.

Question 7

What is Rapid Application Development?

Answer 7

An iterative methodology which uses partially functioning prototypes that are trialled by the user and are continuously built upon

Question 8

What are the disadvantages of the Spiral model?

Answer 8

*High cost due to constant prototyping
*Lack of focus on code efficiency
*Expensive to hire risk assessors

Question 9

What are the disadvantages of the Agile model(s)?

Answer 9

*there is poor/ a lack of documentation
*requires constant interaction between programmer and user

Question 10

What are the stages of most programming methodologies?

Answer 10

*Analysis
*Design
*Development
*Testing
*Implementation
*Evaluation
*Maintenance