New PMP Question & Answers with explanation

As a project manager, you perform various project performance measurements to assess the magnitude of variation. You then attempt to determine the cause and decide whether corrective action is necessary. This is:
Select one
Which of the following is not a project competing constraint?
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A single point of failure (SPOF) is the part of a system that, upon failure, stops the entire system from working or makes the system useless. Which of the following events can render a knowledge management system ineffective?
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Fill in the blank. _______________ indicates that planning and documentation are iterative or ongoing activities.
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Estimating the type and quantities of material, people, equipment, and supplies required to perform each activity is:
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