New PMP Question & Answers with explanation

Which logical relationship does the PDM use most often?
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You are working on a project that requires resources with expertise in the areas of hospitality management and entertainment. You have prepared the project schedule and notified the functional managers about the resources you'll need, and when, from their areas. What are the other things you should do?
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You have been hired as a contract project manager for Grapevine Vineyards. Grapevine wants you to design an Internet wine club for its customers. Customers must register before being allowed to order wine over the Internet so that legal age can be established. You know that the module to verify registration must be written and tested using data from Grapevine's existing database. This new module cannot be tested until the data from the existing system is loaded. This is an example of which of the following?
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Which of the following statements describe the activity list?
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You have been hired as a contract project manager for Grapevine Vineyards. Grapevine wants you to design an Internet wine club for its customers. One of the activities for this project is the installation and testing of several new servers. You know from past experience it takes about 16 hours per server to accomplish this task. Since you're installing 10 new servers, you estimate this activity to take 160 hours. Which of the estimating techniques have you used?
Select one