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Exam H12-211 topic 1 question 289 discussion

Actual exam question from Huawei's H12-211
Question #: 289
Topic #: 1
[All H12-211 Questions]

Which of the following statements are true about STP BPDUs?

  • A. During initialization, each switch enabled with STP proactively sends configuration BPDUs.
  • B. BPDUs are encapsulated in Ethernet frames and the destination MAC address is a multicast MAC address.
  • C. After STP is enabled on a port, the switch periodically sends TCN BPDUs through the designated port.
  • D. STP has two types of packets: configuration BPDU and TCN BPDU.
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Suggested Answer: D 🗳️
by Dom1234 at Oct. 28, 2020, 2:16 p.m.

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vonen
3 years, 8 months ago
ABD true, C false: There are two types of STP BPDUs: Configuration BPDUs (heartbeat):STP-enabled designated ports send configuration BPDUs at Hello timer intervals. Topology Change Notification (TCN) BPDUs are sent only after a device detects a network topology change. A BPDU is encapsulated in an Ethernet frame. Its destination MAC address is a multicast MAC address, 01-80-C2-00-00-00 Each bridge actively sends configuration BPDUs during initialization. After the network topology becomes stable, the designated port of each device periodically sends configuration BPDUs https://support.huawei.com/enterprise/en/doc/EDOC1000142081/e99e1364/bpdu-format
upvoted 3 times
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Peter237
3 years, 9 months ago
A and D seems the right.
upvoted 1 times
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macarui
4 years, 4 months ago
correct answer: A, B and D
upvoted 3 times
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Dom1234
4 years, 6 months ago
Isnt A and B also correct?
upvoted 3 times
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