New PMP Question & Answers with explanation

Alyssa is a project manager tasked with managing an infrastructure project that will consolidate five data centers into one. She has used a waterfall approach to carry out initial planning activities and is executing the work using an Agile-based approach. This hybrid approach is new to her and the team. After completing their second iteration, Alyssa gets the team together to brainstorm how they can continue to improve the process. One team member with experience using Agile approaches recommends getting together at the conclusion of each iteration to talk about what went well, what could be improved, and what they will commit to change during the next iteration. What is the team member recommending?
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You are a senior project manager working at a manufacturing plant that produces components used by the aviation industry. You are using a predictive life-cycle approach and are in the process of implementing approved changes. What key information will you need to successfully complete the associated activities?
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Making small, incremental improvements within a product or process is known as:
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Nicolas is the sponsor of a project that will replace all equipment that has already surpassed its end of lifetime span. He decides to assign this project to Carina, his topperforming project manager. Carina’s first task will be to write the project charter. Who will be responsible for signing the project charter document, thereby approving the project?
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A project manager plots the degree of certainty and complexity of a project along x- and y-axes to determine what type of project management approach would suit the project best. The exercise reveals that the project falls within the “complex” quadrant due to moderately uncertain requirements and highly uncertain technical challenges. Based on this information, what type of approach should the project manager use to manage the project?
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