New PMP Question & Answers with explanation

What is a recommended method for controlling change within a project?
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Mark is in the middle of a software development project. So far, the project has incurred a total cost of $50,000. If it is determined the project is no longer required, what would we call the cost incurred to date?
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A project post-mortem is an activity, usually performed at the project’s conclusion, to determine and analyze a project’s outcome which also includes a lessons-learned gathering exercise. Project post-mortems help to mitigate future risks and are often a key component of, and ongoing precursor to, effective risk management. Which of the following is a terrible mistake when collecting lessons learned?
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A project manager must stress the importance of collecting and documenting lessons learned through the project lifecycle. One good way to collect this information is during weekly status meetings. Usually, weekly status meetings, if not managed properly, end up in firefighting since most of the time, attention goes to the burning issues. How can you ensure that the lessons-learned gathering does not get missed in such a situation?
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Change control tool selection should be based on the needs of the project stakeholders, including organizational and environmental considerations and/or constraints. Which of the following is not a key change management consideration while selecting an appropriate change control tool for a project?
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