H12-811_V1.0 · Question #814
Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?
The correct answer is B. 0 00-01-02-03-04-05. In STP (Spanning Tree Protocol), the Bridge ID (BID) is used to uniquely identify a switch in the network. It consists of a bridge priority and a MAC address. A BID with a bridge priority of 0 and a MAC address starting with 00-01 is reserved for special purposes and cannot be…
Question
Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?
Options
- A0 10-01-02-03-04-05
- B0 00-01-02-03-04-05
- C32768 06-01-02-03-04-05
- D4096 01-01-02-03-04-05
How the community answered
(35 responses)- A14% (5)
- B74% (26)
- C3% (1)
- D9% (3)
Explanation
In STP (Spanning Tree Protocol), the Bridge ID (BID) is used to uniquely identify a switch in the network. It consists of a bridge priority and a MAC address. A BID with a bridge priority of 0 and a MAC address starting with 00-01 is reserved for special purposes and cannot be used in a configuration BPDU (Bridge Protocol Data Unit) sent by a regular switch. This prevents conflicts with reserved MAC addresses.
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