Regarding the description of the MPLS forwarding mechanism, which of the following is correct? (Multiple choice)

• A.The system automatically assigns an ID to the upper-layer application that uses the tunnel, also known as Tunnel ID
• B.When an IP packet enters the MRLS domain, the FIB table is the first to be checked
• C.If the Tunnel ID value is not 0x0, and then enter the normal IP forwarding process
• D.If the Tunnel ID value is 0x0, and then enter the MPLS forwarding process

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The network administrator A wants to use the IP Prefix List to match specific routing entries. Which of the following routes will be matched by the IP Prefix List? (Multiple choice)

• A.10.0.0.1/30
• B.10.0.2.0/24
• C.10.0.1.0/24
• D.10.0.0.0/24

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Which of the following commands can be used to view BGP VPNv4 routing and BGP private network routing information on PE?

• A.display vpnv4 bgp routing-table
• B.display bgp routing-table ipv4-family vpnv4
• C.display bgp vpnv4 routing-table
• D.display bgp routing-table address-family vpnv4

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Compared with the OSPFv2 message header, what fields are added in the OSPFv3 message header?

• A.Link ID
• B.Instance ID
• C.IPV6 Auth Type
• D.IPV6 Router ID

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According to this picture, we can judge:

• A.Unable to determine the device type of R3
• B.The device type of R3 must be Level-2
• C.The device type of R3 must be Level-1-2
• D.The device type of R3 must be Level-1

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