for the AS exchange routing information between routing protocol means ().

• A.BGP
• B.OSPF
• C.RIP
• D.ISIS

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Trunk type of port to send packets, the following statements is correct ().

• A.To send a message to the VLAN ID and port the same as the PVID, the VLAN
  information is stripped, and then send
• B.To send a message to the VLAN ID and port PVID different, then sent directly
• C.will send packets to the VLAN ID and port the same as the PVID is sent directly
• D.packets to be sent and the port's PVID VLAN ID is different from the VLAN information is stripped, and then send

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As shown in the following figure, Router A uses manual link aggregation and adds GO/0/1 and G0/0/2 ports to aggregation group 1 The incorrect statement about the status of Router A aggregation port 1 is:

• A.Only shut down GO/0/2 of Router B, Eth-Trunk 1 protocol up
• B.Only shut down GO/0/1 of Router B, Eth-Trunk 1protocol up
• C.Turn off GO/0/1 and G0/0/2 ports on Router B at the same time, Eth-Trunk 1 protocol down
• D.Tum off GO/0/1 and GO/0/2 ports on Router B at the same time, Eth-Trunk 1 protocol up

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In the PPPoE discovery stage, the PPPoE server assigns a session-id to the PPPoE client in which packet?

• A.PADI
• B.PADO
• C.PADR
• D.PADS

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below on the spanning tree protocol described in the Learning state error is

• A.Learning the status of the port can learn the source MAC address of the packet
• B.Learning part of the state's ports can forward data packets
• C.Learning the status of the port can send and receive BPDU packets
• D.Learning the status of the port only to learn the source MAC address, does not forward packets

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