PMI Agile Certified Practitioner (ACP) Practice Exam

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What does TDD stand for in Agile practices?

Time-driven development
Test-driven development
Technology-driven development
Team-driven development

The correct answer is: Test-driven development

Test-Driven Development (TDD) is a software development practice prevalent in Agile methodologies. In TDD, developers write automated test cases for a piece of functionality before they actually implement the code that will fulfill that functionality. The TDD cycle typically follows these steps: first, a test is written that defines a desired improvement or new function; next, the code is written to pass the test; and finally, the code is refactored to meet standards while still ensuring that the tests pass. This approach promotes better code quality, reduces the likelihood of bugs, and improves overall test coverage. It encourages developers to think about the requirements and design of their code before writing the actual implementation, leading to a more intentional and organized coding process. Thus, in the context of Agile practices, TDD aligns with core principles such as delivering high-quality, working software through iterative development and continuous feedback. The other phrases like Time-driven development, Technology-driven development, and Team-driven development do not accurately capture the essence of this Agile practice, as they either describe concepts not commonly recognized in Agile frameworks or misrepresent the fundamental goal of focusing on tests to drive development forward.