Question

This is some concept questions

Answer 1

Answer)

The phases of the waterfall model for software development lifecycle are as follows:

a) Requirement analysis

b) System design

c) Implementation

d) System testing

e) System deployment

f) System maintenance

2) Some of the other models are

a) Agile development

This is meant for software development where the requirement and solution are made through collaborative effort where cross-functional and self-organization of teams are made.

b) Iterative model:

This is with combination to incremental model for the software development which is mostly used by the large development efforts.

c) Spiral model:

This is a risk-driven model based on the patterns of waterfall, prototyping and incremental.

3) The advantage and disadvantage of the waterfall model are as follows:

Advantages:

a) This is simple and easy

b) This is easy to manage and the model is completed at one time

c) This works for a small project

Disadvantages:

a) Once the testing phase starts then it becomes difficult to change

b) Not meant for complex projects

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