As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of isis always takes a value of 00 ?

• A.Right
• B.Wrong

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With an existing network running OSPF, what types of LSAs cause ISPF operations?

• A.3 ?LSA
• B.5 ?LSA
• C.1 ?LSA
• D.4 ?LSA
• E.2 ?LSA

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Huawei's two switch SWA, SWB is connected together through 7 Ethernets, and static route aggregation is configured, and the corresponding ports on the switch SWA are E1/0/1, E1/02, E1/0/3, E1/0/4, E1/ 0/5, E1/0/6, E1/0/7, configured sequentially as if switch SWA, SWB Each aggregation group supports only 6 ports.

• A.With the same configuration of each port, the Ethemet 1/0/6 port is the aggregate group Unselected port
• B.With the same configuration of each port, the Ethemet1/0/1 port is the aggregation group Unselected port
• C.With the same configuration of each port, SWA randomly selects one of the 7 ports as the aggregate group Unselected port
• D.With the same configuration across ports, the Ethemet 1/0/7 port is the aggregate group Unselected port

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Regarding the mpLS handling mode of TTL, is the following description correct?

• A.In MPLSVPI, if you need to hide the structure of the MPLS backbone network, you can use Uniform mode on Ingress for private network messages .
• B.The TTL in the MPLS label has the same meaning as the TTL field in the head. TTL prevents mpLS networks from developing bad routing.
• C.Unifore style, when an IP packet passes through the MPLS network, the IPTTL of the incoming node is minus l. The MPLS TTL field is a fixed value.
• D.Pipe mode. When an IP message passes through the MPLS network, the IPTTL minus 1 is mapped to the WLSTTL field at the incoming node.

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As shown in the following figure, R1 and R2 establish a neighbor relationship with LeveL2, and the key configuration is as follows, so is the following route entry for R2 correct?

• A.0::/64 The router will appear in the IP routing table
• B.2022::/64 Routers appear in the IP routing table
• C.2019::/64 Routers appear in the IP routing table
• D.2021::/64 Routers appear in the IP routing table

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