What are the advantages and disadvantages of prototyping techniques within any software development methodology?

Prototyping is widely used in most system development cases and should be paid particular attention to. There are techniques, methods of use, methodologies of implementation, and many other characterizations that are both interesting to look at and important to understand. Please make sure you address the following questions in your posts and clearly indicate which one you are addressing:

Compare and contrast any two types of prototyping techniques.

What is the difference between nonoperational and operational prototypes? Give an example of each.

How does the customer interaction (role) differ between standard information gathering techniques like interviews, surveys, and the prototyping technique?

Why is prematurely implementing a system one of the risks in using the prototyping technique?

How can prototyping cause the users to prematurely adopt the prototype as the completed systems? What can a project manager do to prevent it?

What are the principles of agile methodologies? Give an example to support two principles.

Agile development is characterized by interactive and incremental processes. How is that different from the characteristics of other software development life cycles (SDLC)?

What are some risks in using agile methodologies? Give an example to support one of your risks.

Why is SCRUM one of the most popular agile methodologies? What are the characteristics of a SCRUM methodology?