The network is shown in the figure below. Switch configuration information is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)

• A.Data frames on the two links do not include VLANTAG
• B.The PVID of the switch GigabitEthernet0//1 port is 20
• C.Host A and Host B can be pinged
• D.Host A and Host B cannot be pinged

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Which of the following statements about IPv6 RA.
and RS messages are correct? ()

• A.RA. Used to request address prefix information
• B.RA. Used to reply address prefix information
• C.RS is used to request address prefix information
• D.RS is used to reply address prefix information

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By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to N? ()

• A.164
• B.162
• C.161
• D.163

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All ports on the root bridge switch are designated ports. ()

• A.True
• B.False

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The IPv6 protocol uses NS and NA.
packets for duplicate address detection ()

• A.True
• B.False

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