New PMP Question & Answers with explanation

A large project involving functional groups in four countries is nearing completion. The project manager is preparing closeout documents. Who should sign off on the acceptance of project deliverables?
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A project is initiated based on the approved scope. During implementation of the project design, a team member states that the product will not meet the requirements in a particular scenario. Fixing the issue will increase the scope and costs, and the project will miss the deadline. The project sponsors do not have additional funding to support the project. What should the project manager do?
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Project team members are used to performing changes outside of the established change control process. In a team meeting, another change request was issued to the company board of directors. What should the project manager do?
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A project manager learns that a new law, which will affect the business' type of products, is expected to be passed within the next three to six months. A project to launch a new product is being initiated, and is expected to be complete within two-and-half months. This new product would not meet the requirements of the proposed legislation if it passes. What should the project manager do?
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During the final stages of a project, an issue with equipment provided by a subcontractor is identified. After conducting an impact analysis, what document should the project manager consult to determine how to address this issue?
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