RD is used to distinguish the same IP address in different VPNs. How many bits does the RD contain?

• A.64
• B.128
• C.32
• D.16

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Which of the following options may affect the establishment of IBGP neighbors? (Multiple Choice)

• A.The BGP protocol version is inconsistent
• B.IBGP-Multi-hop is not configured
• C.Authentication is unsuccessful
• D.IGP routing is unreachable

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In Huawei devices, when ISIS imports external routes and sets external route tags for routing information, the metric type of ISIS does not need to be modified, just keep the default.

• A.False
• B.True

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RSTP provides different protection functions in different scenarios. Which statement is wrong? (Multiple choice)

• A.After the anti-TC-BPDU packet attack function is enabled, the number of times the switching device processes TC BPDU packets in a unit time can be configured
• B.Enable the designated port of root protection. When the port receives a better RST BPDU, the port will enter the Discarding state and no longer forward packets. If the port does not receive a better RST BPDU within a period of time, it will automatically return to the normal Forwarding state
• C.After the BPDU protection function is activated on the switching device, if the edge port receives the RST BPDU, the edge port will be set as a non-edge port, and the spanning tree calculation will be performed again
• D.The designated port with root protection function enabled, its end [role can only remain as designated port

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