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Refer to the exhibit. All devices attached to the network are shown. How many collision domains are present in this network?
Correct Answer: E
Section: LAN Switching Technologies Explanation/Reference: Explanation: A switch uses a separate collision domain for each port so there are a total of 9 for each device shown. In addition to this, the switch to switch connections (3) are a separate collision domain. Finally, we add the switch to router connections (2) and the router to router connection (1) for a total of 15.