Waterfall testing model in Testing Fundamentals - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the Waterfall testing model?

The Waterfall testing model is a step-by-step approach where testing happens after the software development phases are complete, following a fixed sequence.

beginner

List the main phases of the Waterfall testing model.

The main phases are: Requirements, Design, Implementation, Testing, Deployment, and Maintenance.

beginner

Why is the Waterfall testing model called 'sequential'?

Because each phase must finish before the next one starts, like steps in a waterfall flowing down one after another.

intermediate

What is a key disadvantage of the Waterfall testing model?

It is hard to go back and change something once a phase is finished, so bugs found late can be costly to fix.

intermediate

When is the Waterfall testing model most suitable?

It works best when requirements are clear and unlikely to change, like in simple or well-understood projects.

In the Waterfall testing model, when does testing occur?

A Only after deployment

B Continuously during development

C Before requirements gathering

D After all development phases are complete

Testing happens after the implementation phase is finished in the Waterfall model.

Which of the following is NOT a phase in the Waterfall model?

A Continuous Integration

B Implementation

C Design

D Maintenance

Continuous Integration is a modern practice not part of the traditional Waterfall phases.

What is a major risk of using the Waterfall testing model?

A Too much flexibility in requirements

B Difficulty fixing bugs found late

C Testing happens too early

D No documentation is created

Because testing is late, bugs found then can be expensive and hard to fix.

Which project type suits the Waterfall testing model best?

A Projects with changing requirements

B Projects needing frequent releases

C Simple projects with clear requirements

D Exploratory projects

Waterfall works well when requirements are stable and clear from the start.

How does the Waterfall model handle changes in requirements?

A Changes are difficult and costly after a phase is done

B Easily adapts at any phase

C Changes are ignored

D Changes are handled during testing

Once a phase is finished, going back to change something is hard and expensive.

Explain the sequence of phases in the Waterfall testing model and why it is called sequential.

Think of how water flows down steps one after another.

Describe the advantages and disadvantages of using the Waterfall testing model.

Consider both what makes it simple and what makes it risky.