New PMP Question & Answers with explanation

Tom is a project manager working for a reputable editorial agency specializing in exam preparation. As part of his latest project, he uses an approach that enables the team to release partially completed work to customers in order to obtain early feedback. This then allows the team to use the feedback to modify the work. What type of project life cycle is Tom using?
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Using the following three-point estimates, calculate the expected value using the beta distribution formula: Optimistic = 25, Pessimistic = 50, Most Likely = 35.
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Within Agile, a “T” shaped person refers to what?
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You are performing activities associated with change control. One of the activities you are involved in is documenting and storing the configuration management information needed to effectively manage product information and data associated with changes. Which of the following does this describe?
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All of the following statements are true regarding communications within an Agile work environment, except for which one?
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