Regarding the certification of the ISIS protocol, which statements are correct? (Multiple Choice)

• A.Two routers are configured for regional authentication and interface authentication. The passwords are the same, so the two can establish neighbor relationship.
• B.After the area authentication is configured, the IIH, SNP, and LSP sent by the router must be connected to the authentication TLV.
• C.Interface authentication can authenticate hello packets of Level-1 and Level-2.
• D.After the interface authentication is configured, the IIH that the router sends must carry the authentication TLV.

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When there are multiple matching rules in the ACL of the VRP, which of the following statements is correct about the matching order?

• A.On confirmation, follow the Rule-ID, match from small to large
• B.There is only one matching order and cannot be modified.
• C.On confirmation, match the order by matching the permit first and then matching the deny.
• D.By default, match according to the principle of "depth first"

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As shown in the figure, there are two IPv6 networks that can access the IPv4 network. At the same time, an IPSEC tunnel needs to be established between the two IPv6 networks for communication. Which of the following encapsulation modes can meet the requirements above?

• A.AH + transmission mode
• B.AH + tunnel mode
• C.ESP + tunnel mode
• D.None of the above options

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Configuring AS-path-filter ip as-path-fltr10 permit_100$ means match the route received from AS100.

• A.False
• B.True

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What do we usually call the devices in the MPLS BGP VPN domain? (Multiple choice)

• A.P
• B.CP
• C.PE
• D.User router

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