New PMP Question & Answers with explanation

Your company is way behind schedule in the deployment of a government-mandated change to a health care processing system that must be in production by the end of the year. To meet the due date, you and your team have met and decided to hire an additional 50 programmers to work with the existing staff. This is an example of what?
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As the project manager of a project, you had estimated certain activity durations before acquiring all project team members. On acquisition, you find that their actual competency levels are much lower than what you anticipated. In such a case, you will:
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You have a schedule activity that can be delayed without delaying the early start date of any subsequent activities. This is an example of:
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Jack is the project manager of a project that is halfway through its execution. He is currently looking at the work schedule. He adjusts a few of the schedule milestones and imposes date constraints for some of the work packages. This relates to which of the following processes?
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Mandatory dependencies are those that are inherent in the nature of the work being done. They often involve physical limitations, such as on a construction project when it is impossible to erect the superstructure until the foundation is built. According to the PMBOK, a mandatory dependency is also:
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