H12-811_V1.0 · Question #819
In STP, the bridge ID on the switching network is as follows. With which of the following bridge IDs is the switch selected as the root bridge?
The correct answer is B. 4096 00-01-02-03-04-DD. In STP, the switch with the lowest Bridge ID is selected as the root bridge. The Bridge ID consists of the bridge priority and the MAC address. In this case, the switch with the bridge priority of 4096 has the lowest Bridge ID, making it the root bridge. If two switches have…
Question
In STP, the bridge ID on the switching network is as follows. With which of the following bridge IDs is the switch selected as the root bridge?
Options
- A32768 00-01-02-03-04-BB
- B4096 00-01-02-03-04-DD
- C32768 00-01-02-03-04-CC
- D32768 00-01-02-03-04-AA
How the community answered
(49 responses)- A2% (1)
- B84% (41)
- C10% (5)
- D4% (2)
Explanation
In STP, the switch with the lowest Bridge ID is selected as the root bridge. The Bridge ID consists of the bridge priority and the MAC address. In this case, the switch with the bridge priority of 4096 has the lowest Bridge ID, making it the root bridge. If two switches have the same bridge priority, the MAC address is used to break the tie, with the lower MAC address winning.
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