What is the first step in the software development lifecycle?

What does RAD stand for?

What are the characteristics of software?

Compilers,Editors software come under which type of software?

Software consists of

Customer feedback and the refined requirement is used to modify the prototype and is again presented to the customer for evaluation. What type of model it is?

When development time is critical, or when a product is needed now before things change andWhen Quality is negotiable. what type of model is preferred.

The word-processing software is developed using  which model

What is true about the 3rd phase of spiral model

It is a meeting held after a product ships to discuss what happened during the product development and release process, with the goal of improving things in the future based on those learnings and conversations.