New PMP Question & Answers with explanation

In projects with adaptive life cycles, many of the project management processes are repeated in each iteration of the project except:
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With a growing awareness of so-called unknowable-unknowns, the existence of emergent risk is becoming clear. These are risks that can only be recognized after they have occurred. Emergent risks can be tackled through developing:
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During which stages of a project should the project manager be most active in managing project stakeholders’ needs and expectations?
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Increasing the number of resources in order to crash a project schedule does not always cut the time by the same factor. In worst cases, too many resources assigned to an activity may actually increase the activity duration. This is because:
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In order to facilitate project configuration and change management on complex projects, a project manager relies on configuration and change management tools. Such tools:
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