New PMP Question & Answers with explanation

In a steering committee meeting for a project to build a new state-of-the-art communications device, the committee chair reprimands the project manager for not using the company’s file sharing system as required by the organization. The project manager explains that the project team chose a newer tool for the project, as it was much better. What most likely caused this situation?
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You are developing the communications management plan for a construction project. You want to determine the information needs of the project stakeholders, specifically focusing on the type and the format of information that will be required to communicate with the stakeholders. What is your best course of action?
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A new project is starting, and the team members come from all over the world. The project manager has concerns about communications. What should the project manager do first?
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You are managing a project to update the packaging and digital media for a popular snack food to promote a charity fundraiser. The project is well underway, and you are currently actively collecting and storing information about each deliverable team's progress, creating forecasts for your sponsor, distributing work performance reports and planning presentations to key stakeholders, and verifying delivery. Which process are you performing?
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You have just taken over a project to overhaul the company's telecommunications network. During your first week, you determine that the engineers spend at least 80% of their time responding to unexpected requests for information from different project stakeholders. Because of these interruptions, your engineers cannot focus on their assigned project activities, which is resulting in frequent network outages. What should you do first?

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