New PMP Question & Answers with explanation

A project issue is identified after implementation in the production environment. What tool or technique should the project manager use to identify the reason for the issue?
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User acceptance tests on a project have been omitted since the technology is operational at other factories. However, after implementation, the technology is not working as expected. What should the project manager do?
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The quality management plan states that project deliverables must be reviewed at least one week before the deadline. Three deliverables have missed this quality requirement. What should the project manager do?
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A project team failed to consider a critical technical aspect on a project requirement. A quality audit demonstrates that this issue would prevent the end product from meeting its quality requirements. What should the project manager do first?
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The project manager observes that team members are accepting a number of changes to the deliverables with little attention to ensuring acceptable standards. When questioned, the team members reply that the changes are relatively minor. What part of the project management plan should the project manager review with the team?
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