The origin of SDN is the separation of transfer and control. Separation of control and control is a method but not the essence of realizing SDN.

• A.True
• B.False

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There is a TTL field in the header of the IP packet. Which statement about this field is correct?

• A.This field is used for data packet loop prevention
• B.The length of this field is 7 bits
• C.This field is used to indicate the priority of the data packet
• D.This field is used for packet fragmentation

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The DHCPv6 server supports providing hosts with DNS server addresses and other configuration information.

• A.True
• B.False

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The routing table output information of router R1 is shown in the figure, which of the following statements is correct? (Multiple choice)

• A.Packets whose destination network is 11.0.0.0/8 will be forwarded from GigabitEthernet0/0/0 interface of the router
• B.The router will forward packets with the destination network 12.0.0.0/8
• C.The router discards packets with the destination network 11.0.0.0/8
• D.Packets whose destination network is 12.0.0.0/8 will be forwarded from Ethernet0/0/0 interface of the router

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A Layer 2 Ethernet switch generates MAC address table entries based on the () of the Ethernet frame received by the port?

• A.Destination IP address
• B.Source IP address
• C.Source MAC address
• D.Destination MAC address

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