New PMP Question & Answers with explanation

A project manager is analyzing the relationship between the consumption of project funds and the work being accomplished for such expenditures. In which project management process would this be done?
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You are reviewing the response to an RFP issued by your company for a project that will last a year and exceed US$5 million. Three vendors have been shortlisted. The first, Nosteltec, Inc., is a relatively new company in this industry. It has assembled a team of industry experts with vast industry experience and qualifications. The second company, Xen Contractor, has been in business for 20 years. You and your company have a long and positive history working with this vendor. The third company is SonoNet LLC. It has been in business for 10 years and has a reputation for extensive expertise and superior delivery. They are also well-known for being one of the more expensive providers in the market. You have many relationships with the Xen Contractor staff, which you established during prior procurement contracts with this company. As a result, a project manager from Xen Contractor, with whom you are friendly both personally and professionally, calls you for clarification on a point
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A certain project was in the Collect Requirements phase. The product’s eventual users could not define their requirements. In this scenario, which of the following tools could have helped determine the requirements?
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At the beginning of the project, a project manager realized that the technical expertise of the team was limited, a risk to the project. Midway through the project, the project manager decided this was no longer a risk and considered it outdated. As part of which process would he do the risk reassessment?
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Sally, a project manager who is a PMP, discovered an error in the estimation of a project. A certain cost was double calculated; as a result, the budget, which is already approved, was now in excess by $25,000. She knows that publicizing this information may cause her to get a poor performance appraisal, since her company is meticulous about such matters. What should she do?
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