Which of the following is not a phase of the Software Development Life Cycle (SDLC)?
A. Planning
B. Analysis
C. Testing
D. Maintenance
Answer: Option C
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Related Questions on Software Engineering
Which of the following is not a phase of the Software Development Life Cycle (SDLC)?
A. Planning
B. Analysis
C. Testing
D. Maintenance
What does UML stand for in software engineering?
A. Unified Modeling Language
B. Universal Modeling Language
C. Unique Modeling Language
D. Unified Management Language
Which software development model is also known as the linear-sequential life cycle model?
A. Agile
B. Waterfall
C. Spiral
D. RAD (Rapid Application Development)
In which phase of the SDLC is the feasibility study conducted?
A. Planning
B. Design
C. Implementation
D. Maintenance

Correct Answer: None of these (because all four — Planning, Analysis, Testing, and Maintenance — are actually phases of SDLC).
It seems the answer key in the image has a mistake, because Testing is indeed a valid SDLC phase.