Which of the following is the type SDLC models?Waterfall ModelSystem ModelAgile ModelPareto model

To determine the types of Software Development Life Cycle (SDLC) models from the given options, we need to identify which of these models are recognized as SDLC methodologies.

1. Waterfall Model: This is a linear and sequential approach to software development. It is one of the oldest SDLC models and is characterized by distinct phases such as requirements, design, implementation, verification, and maintenance.

2. System Model: This term is not widely recognized as a specific SDLC model. It may refer to various approaches used in system development, but it is not a standard SDLC model.

3. Agile Model: This is a popular iterative approach to software development that emphasizes flexibility, collaboration, and customer feedback. Agile methodologies include frameworks like Scrum and Kanban.

4. Pareto Model: This is not an SDLC model. The Pareto principle (or 80/20 rule) suggests that roughly 80% of effects come from 20% of causes but does not pertain to software development methodologies.

Final Answer:

The recognized SDLC models from the given options are:

1. Waterfall Model
2. Agile Model

The System Model and Pareto Model are not considered types of SDLC models.