New PMP Question & Answers with explanation

One of your subproject managers, a recent graduate with limited experience in managing projects, prepared a procurement SOW. When you were researching independent estimates, you discovered that your vendor’s proposals are way off of your expectations. You review the SOW and find that it was not detailed enough for the vendor to come up with an accurate estimate. Of the following options, which area of the PMI Code of Ethics and Professional Conduct does this question relate to, and which process does the independent estimates tool and technique belong to?
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Team charters are also known by what other name?
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Which of the following does a project manager use to build trust with stakeholders and overcome resistance to change?
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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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