Exam CRISC topic 1 question 221 discussion

Actual exam question from Isaca's CRISC

Question #: 221
Topic #: 1

You are the project manager for Bluewell Inc. You are studying the documentation of project plan. The documentation states that there are twenty-five stakeholders with the project. What will be the number of communication channel s for the project?

A. 20
B. 100
C. 50
D. 300

Show Suggested Answer

Suggested Answer: D 🗳️
Communication channels are paths of communication with stakeholders in a project. The number of communication channels shows the complexity of a project's communication and can be derived through the formula shown below:
Total Number of Communication Channels = n (n-1)/2
where n is the number of stakeholders.
Hence, a project having five stakeholders will have ten communication channels. Putting the value of the number of stakeholders in the formula will provide the number of communication channels.
Hence,
Number of communication channel = (n (n-1)) / 2
= (25 (25-1)) / 2
= (25 x 24) / 2
= 600 / 2
= 300
Incorrect Answers:
A, B, C: These are not valid number of communication channels for the given scenario.

by Rooks at Nov. 1, 2020, 2:27 p.m.

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rcmaapom

7 months, 3 weeks ago

D is right. Communication channels= n*(n-1)/2 . 25*(25-1)/2= 600/2 = 300

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Rooks

1 year ago

The formulas described in the descriptions are not consistent: First it says Total Number of Communication Channels = n (n-1)/2 And then it says the below, notice how the parenthesis is placed that makes the difference in algebra. First formula is right for this question. Number of communication channel = (n (n-1)) / 2

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