MACsec provides users with secure MAC layer data sending and receiving services. Which of the following is not a service available by ACsec?

• A.Integrity check
• B.Data source authenticity verification
• C.User data encryption
• D.Controllability check

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What is correct below about LDP synchronization in ISIS?

• A.LDP synchronization can be deployed on the Loopback interface.
• B.LDP establishes neighbors faster than ISIS, so LDP synchronization is turned off by default
• C.LDP synchronization can be turned on globally.
• D.LDP synchronization avoids traffic loss when the active-standby link is switched.

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OSPFv3 uses the same route advertisement method as OSPFv2: advertising is done through the network command in the OSPFv3 area view.

• A.False
• B.TRUE

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OSPFv2 is an IGP running on IPv4 networks, whereas OSPFv3 is an IGP running on IPv6 networks. OSPFv2 and OSPFv3 have similar LSA types, but their LSA functions are slightly different. Which of the following is not an OSPFv3 LSA type?

• A.ASBR-Summary-LSA
• B.AS-External-LSA
• C.Router-LSA
• D.Network-LSA

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In Huawei's NAC solution, which of the following cannot be used for Portal authentication?

• A.User name and password
• B.Passcode
• C.SMS verification code
• D.User's MAC address

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