Software development

Question 1

What is the waterfall lifecycle model?

Answer 1

• The Waterfall Model is a sequential software development process divided into distinct phases
• Each phase must be completed before the next one begins

Question 2

Steps of the waterfall lifecycle model

Answer 2

• Requirement gathering and analysis: all possible system requirements to be developed are captured and documented
• System design: the requirements are translated into a design
• Implementation: the actual code is written based on the design
• Integration and testing: all the modules are integrated and tested
• Deployment: the product is released to the market or handed over to the client
• Maintenance: post-release, the system needs regular maintenance to fix bugs and add new features

Question 3

Benefits of the waterfall lifecycle model?

Answer 3

• Simple and linear
• Clear stages and milestones
• Suitable for well-defined projects

Question 4

Drawbacks of the waterfall lifecycle model?

Answer 4

• Inflexible: changes are difficult to implement once the project has started
• Expensive to fix late problems
• Long development cycle

Question 5

Suitability of the waterfall lifecycle model

Answer 5

• Suitable for projects where the requirements are well understood and unlikely to change
• High quality and compliance are essential, must be a clear understanding of the end goal

Question 6

What is the agile programming model?

Answer 6

• Extreme programming is a type of agile software development methodology that promotes adaptability and high customer involvement

Question 7

What are the steps of the agile programming model?

Answer 7

• Identify user stories and requirements: work closely with stakeholders to gather functional and non-functional requirements
• Plan the sprint: break down requirements into tasks; choose a set of tasks for the current sprint
• Design the solution: focus on a simple and adaptable design
• Develop the features
• Test continuously: testing is ongoing, not saved for the end
• Review progress: collect feedback from stakeholders
• Reflect on sprint
• Release: may release after every sprint or every few sprints
• Repeat: move onto the next sprint

Question 8

What is a sprint in agile programming?

Answer 8

• A short, time-boxed development period
• Focusing on a specific task or a few tasks

Question 9

Benefits of the agile programming model

Answer 9

• High adaptability
• Frequent communication
• Quality focus
• Customer collaboration

Question 10

Drawbacks of the agile programming model

Answer 10

• Requires experienced team members
• Intensive collaboration can lead to burnout
• May lack documentation
• Uncontrolled changes in requirements

Question 11

Suitability of the agile programming model

Answer 11

• Most suitable for small to medium-sized projects where requirements can change and customer involvement is high

Question 12

What is the spiral programming model?

Answer 12

• A software development methodology that combines aspects of both iterative (agile) and sequential (waterfall) processes

Question 13

What are the steps of the spiral programming model?

Answer 13

• Planning: defining the objectives, alternatives and constraints for the current phase of the project
• Risk analysis: identify and assess potential risks and plan mitigation strategies
• Engineering: develop the next version of the product, including design, coding, testing and integration
• Evaluation and feedback: review the progress with stakeholders and plan the next iteration

Question 14

What’s special about the spiral programming model?

Answer 14

• The process repeats, spiralling through stages, with each spiral loop representing a development phase until the final product is ready

Question 15

Benefits of the spiral programming model

Answer 15

• Flexibility
• Risk management
• Strong customer involvement
• Incremental releases

Question 16

Drawbacks of the spiral programming model

Answer 16

• Complexity
• Time-consuming
• Expensive
• Not suitable for small projects

Question 17

Suitability of the spiral programming model

Answer 17

• Most suitable for large, complex projects where requirements may change, and risk management is essential

Question 18

What is rapid application development (RAD)?

Answer 18

• A software development methodology that emphasises fast and iterative development

Question 19

What are the steps of rapid application development?

Answer 19

• Requirement planning: gather general system requirements
• User design and prototyping: collaborate with users to design prototypes
• Construction or iterative development: build the system incrementally, with continuous user feedback
• Cutover of development: transition the product into the live environment
• Maintenance and updates: continue to adapt and improve the system

Question 20

Benefits of the rapid application development model

Answer 20

• Speed
• User involvement
• Flexibility
• Incremental development

Question 21

Drawbacks of the rapid application development model

Answer 21

• Dependent on strong team collaboration
• Potential lack of quality
• Not suitable for small projects
• Can lead to scope creep: flexible nature leads to uncontrolled changes in requirements

Question 22

Suitability of the rapid application development model

Answer 22

• Most suitable for projects where rapid development is required and where requirements can be developed and refined on the go