The controller is the core component of SDN. The controller connects to the device through the southbound interface. Which of the following belong to the controller southbound protocol?

• A.SNMP
• B.PCEP
• C.NETCONF
• D.OpenFlow

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In VRPOn the platform, the command"interfacevlanit<vlan-id>"The role is (). ()

• A.Configure VLAN for a port
• B.Create a VLAN
• C.No such command
• D.Create or enter VLAN virtual interface view

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Ethernet_I containing the Ethernet headerIWhat is the length of the frame? ()

• A.64-1518B
• B.64-1500B
• C.60-1560B
• D.46-1500B

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

• A.False
• B.True

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The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will be forwarded from the corresponding port of this MAC. ()

• A.True
• B.False

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