Ongoing support, bug fixes, performance monitoring, and minor enhancements after go-live belong to which SDLC phase?

Question

BlackTom AI · Accepted Answer

Maintenance phase handles post–go-live activities such as ongoing support, bug fixes, performance monitoring, and minor enhancements.

1) Relevant knowledge points and concepts
- SDLC (Software Development Life Cycle) consists of distinct phases: Planning, Requirements Analysis, Design, Implementation/Development, Testing, Deployment, and Maintenance. 
- The Maintenance phase occurs after deployment/go-live and focuses on keeping the system operational, correcting defects discovered in production, optimizing performance, and implementing small enhancements or updates.

2) Step-by-step reasoning
- The question specifies activities happening "after go‑live": ongoing support, bug fixes, performance monitoring, minor enhancements. 
- Match these activities to SDLC phases:
  - Planning: sets scope and timeline before development.
  - Requirements Analysis: gathers and specifies user needs.
  - Design: creates architecture and detailed designs.
  - Maintenance: addresses production issues, monitors system behavior, and applies updates once the system is live.
- Since the activities explicitly occur post-deployment, they align with Maintenance.

3) Calculations
- No numerical calculations are required for this conceptual mapping.

4) Why the correct answer is correct
- Maintenance is defined exactly by the tasks listed: corrective maintenance (bug fixes), adaptive/performance maintenance (monitoring and tuning), and perfective maintenance (minor enhancements). These are ongoing, reactive and proactive tasks that sustain and improve a live system.

5) Why the other options are incorrect
- Requirements Analysis: occurs before development to elicit and document needs, not after go‑live.
- Planning: is project scoping and scheduling prior to execution.
- Design: produces system architecture and detailed designs prior to implementation.
None of these phases are primarily responsible for post‑deployment support and live fixes.

6) Conclusion
- Therefore the correct SDLC phase for ongoing support, bug fixes, performance monitoring, and minor enhancements after go‑live is Maintenance, matching the provided answer: Maintenance.

Ongoing support, bug fixes, performance monitoring, and minor enhancements after go-live belong to which SDLC phase?单项选择题

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