New PMP Question & Answers with explanation

You are a project manager for Bluebird Technologies. Bluebird writes custom billing applications for several industries. One of your users asks for some changes to the invoice functionality during a status meeting. You explain to her that the change needs to go through the change control system, which is a subset of the configuration management system. You explain that a change control system does which of the following?
Select one
You are a project manager for Bluebird Technologies. Bluebird writes custom billing applications for several industries. A schedule change has been requested. From the perspective of the Perform Integrated Change Control process, change is concerned with which of the following?
Select four
Your project progressed as planned until yesterday. Suddenly, an unexpected risk event occurred. You quickly devised a response to deal with this negative risk event using which of the following?
Select one
You are working on a project that was proceeding well until a manufacturing glitch occurred that requires corrective action. It turns out the glitch was an unintentional enhancement to the product, and the marketing people are absolutely crazy about its potential. The corrective action is canceled, and you continue to produce the product with the newly discovered enhancement. As the project manager, you know that a variance has occurred. Which of the following options is true?
Select one
The Delphi method, technology forecasting, and forecast by analogy are examples of what category of forecasting methods?
Select one