New PMP Question & Answers with explanation

You are working on a project that will upgrade the phone system in your customer service center. You have considered using analogous estimating, parametric estimating, bottom-up estimating, and three-point estimating to determine activity costs. Which process does this describe?
Select one
All of the following are a type of project ending except for which one?
Select one
You are a project manager working on a software development project. You've developed the risk management plan, identified risks, and determined risk responses for the risks. A risk event occurs, and you implement the response. Then, another risk event occurs as a result of the response you implemented. What type of risk is this?
Select one
Which of the following are tools and techniques of the Identify Stakeholders process you can use to categorize stakeholders?
Select two
What is the purpose of the project charter?
Select one