During software development, which activities are commonly included in the implementation phase?

During software development, which activities are commonly included in the implementation phase?

• A. Design, coding, and testing
• B. Planning, analysis, and testing
• C. Coding, testing, and integration
• D. Requirements gathering only

Answer: (C)

Implementation is where the software is actually built from the design, so the main activities are coding the components, testing the code as it’s developed, and integrating those components so they work together as a complete system. Coding turns design specifications into source code. Testing during this phase helps catch defects early, with unit tests verifying individual pieces and broader tests ensuring the code behaves as intended. Integration brings together the separate modules, checking that their interfaces and interactions don’t cause issues when combined. The other options pull in activities from earlier stages. Design, planning, and analysis belong to the phases that precede implementation, where you define architecture and gather requirements. Requirements gathering alone describes a pre-implementation activity, not the building and validating of the software.

Implementation is where the software is actually built from the design, so the main activities are coding the components, testing the code as it’s developed, and integrating those components so they work together as a complete system. Coding turns design specifications into source code. Testing during this phase helps catch defects early, with unit tests verifying individual pieces and broader tests ensuring the code behaves as intended. Integration brings together the separate modules, checking that their interfaces and interactions don’t cause issues when combined.

The other options pull in activities from earlier stages. Design, planning, and analysis belong to the phases that precede implementation, where you define architecture and gather requirements. Requirements gathering alone describes a pre-implementation activity, not the building and validating of the software.