Which of the following statements about the VXLAN gateway are wrong?

• A.The third layer gateway of VXLAN can be divided into centralized gateway and distributed gateway.
• B.VXLAN Layer 2 gateway is bound to the VPN instance.
• C.The third layer gateway of VXLAN allows inter-subnet VXLAN communications and external network access.
• D.The second layer gateway of VXLAN allows tenant access XLAN, and used to communicate between the subnets in the same VLAN.

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Now there is a network consisting of router R1, router R2, router R3 and router R4. These four routers are interconnected via a LAN network. Basic OSPF is deployed on all four routers. When you execute the command "display ospf peer" on the router R2, the status between router R2 and router R3 is "2way".
So, what conclusion can you draw from this output? (Multiple Choice)

• A.Router R3 is neither a DR, nor a BDR
• B.Router R2 is a DR or BDR
• C.Router R4 is DR
• D.There is no full adjacency relationship between router R2 and router R3.
• E.Router R2 is not DR

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About the description of CHAP authentication function in the PPP protocol, which of the following are correct? (Multiple Choice)

• A.The user name must be configured under the authenticated interface of CHAP authentication.
• B.Calculate a hash value using the authentication sequence ID, random number, and key by the MD5 algorithm
• C.If the authenticator does not have a username, the password cannot be configured on the authenticated interface.
• D.Three-message interactive authentication is required, and the username is transmitted only on the network without transmitting the password.

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If the OSPF protocol is running on the network, configure the non-backbone area in the OSPP area as the LSA with the ls-id of 0.0.0.0 in the Totally Stub Totally Stub area. Which LSA does the LSA belong to?

• A.LSA5
• B.LSA2
• C.LSA3
• D.LSA1

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There are now two gateway routers that provide services for hosts on a LAN network to connect to the extranet. What techniques should be used on these two redundant routers to make them the default gateway for hosts in the LAN network?

• A.RIP
• B.BOOTP
• C.VRRP
• D.DHCP
• E.OSPF

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