Free PMP Exam Sample Question

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The following PMP® exam sample question is taken from http://www.free-pm-exam-questions.com - The answer is at the bottom:

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PMBOK Section: Manage Stakeholder Expectations
Process Group: Executing Process Group
Question Type: Calculation
Knowledge Area: Communications Management
Difficulty Level: Easy

Question: You are managing a telecommunication project and 10 telecom engineers are reporting to you. Due to change in scope requested by your customer you need to add team member. You decide to hire 2 more engineers. How many communication channels will be increased by this hiring?
A. 21
B. 23
C. 66
D. 78

Hint: What was the size of the complete project team before the hiring, and what is it now after the hiring?

Correct : B
Reference: PMBOK4-pg:253
Explanation: Since 10 engineers were reporting to you before the hiring of 2 new engineers, the total project team size was 11 and the number of communication channels were 11*10/2 = 55. After the hiring of 2 engineers the new team size is now 13 and the communications channels now are 13*12/2 = 78. The added communication channels are 78-55 = 23. Choice B is the correct answer to this question
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