After deployment, software is updated to fix bugs and add features. This happens in which phase of the Software Development Life Cycle?

Question

BlackTom AI · Accepted Answer

Maintenance activities come after a system is deployed: fixing bugs found in production, releasing patch updates, and adding new or improved features are all part of the maintenance/evaluation phase of the SDLC.

1) Relevant knowledge points and concepts
- Standard SDLC phases typically include: Requirements Analysis (gathering what the system must do), Design (architecture/specs), Implementation (coding), Testing (verification/validation), Deployment/Release, and Maintenance (also called Operation, Evaluation & Maintenance).  
- The Maintenance phase handles corrective, adaptive, perfective, and preventive changes once software is in use. Evaluation (user feedback, monitoring, and assessment) informs what maintenance work is needed.

2) Step-by-step reasoning
- The question specifies activities that happen after deployment: updating software to fix bugs and add features.  
- Anything that occurs after deployment and involves changes to the released product aligns with Maintenance/Operation, not with pre-deployment phases like Requirements, Implementation, or Testing.  
- Evaluation is the process of monitoring and collecting feedback after release; Maintenance is the actual work of applying fixes and enhancements based on that evaluation.

3) (No numeric calculations required)
- Instead, the logical steps above map the described activities to the SDLC phase names.

4) Why the correct answer is correct
- Evaluation & Maintenance explicitly describes post-deployment monitoring (evaluation) and the ongoing work (maintenance) to update the product. Bug fixes and feature additions are classic maintenance tasks performed while the software is operational.

5) Why the other options are incorrect
- a. Requirement Analysis: This is pre-development work to determine system needs, not post-deployment updates.  
- b. Testing: Testing verifies the software before release; it doesn’t refer to ongoing updates after deployment.  
- c. Implementation: Implementation (coding) is the initial development phase; post-deployment fixes and feature rollouts belong to maintenance, not initial implementation.

Conclusion: Therefore, the correct SDLC phase for updating deployed software to fix bugs and add features is d. Evaluation & Maintenance, which matches the provided answer.

After deployment, software is updated to fix bugs and add features. This happens in which phase of the Software Development Life Cycle?单项选择题

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