Which statement about SDLC models is true?

Which statement about SDLC models is true?

• A. SDLC models are only theoretical and not used in practice.
• B. The SDLC provides a structured approach with distinct phases, including models like Waterfall, Iterative, and Spiral.
• C. The SDLC eliminates the need for maintenance after deployment.
• D. None of the above.

Answer: (B)

The main idea here is that SDLC is a structured approach to developing systems, guiding work through defined phases from planning and requirements to design, implementation, testing, deployment, and maintenance. The statement that the SDLC provides this structured framework and includes models like Waterfall, Iterative, and Spiral is accurate because each model represents a way to organize those phases and manage how work progresses. Waterfall follows a linear sequence where each phase is completed before the next begins, which emphasizes planning and documentation upfront. Iterative approaches break the work into cycles, delivering increments and incorporating feedback to refine the system. Spiral blends iterative cycles with risk assessment and prototyping, focusing on mitigating uncertainties early. This method is used in practice across organizations to coordinate work, manage scope, quality, and risks, and to ensure traceability from requirements to deployment and maintenance. It’s not just theoretical, and maintenance remains a normal part of the lifecycle—not something eliminated after deployment. Since this true statement exists, options claiming otherwise or that none of the above apply aren’t correct.

The main idea here is that SDLC is a structured approach to developing systems, guiding work through defined phases from planning and requirements to design, implementation, testing, deployment, and maintenance. The statement that the SDLC provides this structured framework and includes models like Waterfall, Iterative, and Spiral is accurate because each model represents a way to organize those phases and manage how work progresses.

Waterfall follows a linear sequence where each phase is completed before the next begins, which emphasizes planning and documentation upfront. Iterative approaches break the work into cycles, delivering increments and incorporating feedback to refine the system. Spiral blends iterative cycles with risk assessment and prototyping, focusing on mitigating uncertainties early.

This method is used in practice across organizations to coordinate work, manage scope, quality, and risks, and to ensure traceability from requirements to deployment and maintenance. It’s not just theoretical, and maintenance remains a normal part of the lifecycle—not something eliminated after deployment. Since this true statement exists, options claiming otherwise or that none of the above apply aren’t correct.