PPPoE session can only use CHAP authentication.

• A.False
• B.True

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After the two routers are configured with 0SPF, the administrator configures the command on RT

• A.RTA. Will no longer send OSPF packets
• B.The neighbor relationship between the two routers will not be affected
• C.The following description is correct ()
• D.RTA. will continue to receive and analyze and process OSPF packets sent by RTB.
• E.The neighbor relationship between the two routers will be down

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Which of the following port states does the RSTP protocol include? ()*

• A.Discarding
• B.Forwarding
• C.Learning
• D.Listening

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The VlanIF IP addresses of the same switch cannot be the same. ()

• A.False
• B.True

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All ports on the root bridge switch are designated ports.

• A.False
• B.True

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