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CCNA Exam: BroadCast and Collision Domain


1) This is related to the problem mentioned in one of the prep test
2) Please see the attached file
3) I rewrite the question: " What 2 results would occur if the hub H were to be replaced with a Switch that is configured with one ethernet VLAN? (Choose 2)"
4) The given answers: i) The number of Collision domain would increase, ii) The number of broadcast domain would remain the same.
5) My questions: Please say it with your own Wordings , thank you: i) Why do "the number of collision domain would increase?", ii) Why do "the number of broadcast domain would remain the same?"
6) Thank you
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1 Solution
Don JohnstonInstructorCommented:
Because every port on a switch connects to a separate collision domain.

And all ports on a switch are part of the same broadcast domain.

tjieAuthor Commented:
1) What about the HUB itself? Could we add Vlans at hub (This is confused me)?
2) Thanks
Don JohnstonInstructorCommented:
No. A hub is nothing more than a dumb splitter.

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