QuestionQ8

VPLS loop avoidance

RSTP is operating in the network. Which bridge becomes the root bridge?

Question Image

  • A Bridge B
  • B Bridge C
  • C Bridge D
  • D Bridge E
Explanation

RSTP elects the bridge with the lowest bridge ID as the root. Since every bridge has priority 32768, the lowest MAC address determines the result. Bridge E has MAC address 3B:B1:FF:00:00:00, which is lower than the other displayed MAC addresses.

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