New PMP Question & Answers with explanation

Nancy has recently become the project manager for a project already in execution. Nancy has learned the previous project manager did a good job so far and religiously followed the PMBOK guiding principles. However, some of the project communications don’t make sense to her. Which of the project artifacts should Nancy refer to in order to determine reasons for distribution of some reports?
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Mary is currently drafting a stakeholder engagement plan for her new website development project. Her organization has strict communication guidelines. Mary wants to ensure that her stakeholder engagement strategy aligns with the organizational communications guidelines. Where can she find these guidelines?
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In projects following adaptive lifecycles, what are the two critical components of iterative scheduling with a product backlog?
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Linda is currently drafting her project stakeholder management plan. Since she is a new hire, she is not aware of the company’s policies and procedures. If she wants to know more about the company’s general issues management procedures, where must she look?
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Key project stakeholders can significantly influence a project in many ways. During which stage of the project do these stakeholders have the maximum ability to influence a project?
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