In Huawei's SD-WAN solution, which of the following technologies can "enable branch devices to establish IPsec VPN tunnels with headquarters in a NAT environment without manually configuring NAT mapping"?

• A.Disable the address translation function of the NAT device and communicate directly using the public IP address.
• B.SD-WAN NAT traversal technology (branch actively initiates tunnel connections to headquarters, traversing NAT)
• C.Manually configure port forwarding on the NAT device to expose the public IP address of the branch device.
• D.All branch devices use the same public IP address, and a tunnel is established through port multiplexing.

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In Huawei's SD-WAN solution, which of the following technologies can "ensure that VPN service traffic and Internet service traffic between branches and headquarters are isolated and transmitted on the same physical link"?

• A.Link aggregation (binding multiple physical links into a single logical link)
• B.No isolation mechanism; different services share the same channel.
• C.Network slicing (allocating independent logical channels to different services)
• D.Use only two independent physical links to transmit different services separately.

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In the OSPF protocol for wide area networks, what is the core function of the "NSSA (Not-So- Stubby Area)"?

• A.Allow the advertising of Type 5 LSAs (AS external routes) within the area.
• B.Prohibit the publication of Type 5 LSAs within the area; only Type 7 LSAs (NSSA external routes) are allowed.
• C.Disable OSPF authentication and simplify configuration.
• D.Achieve indirect connection between non-backbone regions and Area 0.

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In the deployment of the OSPF protocol in a wide area network, what is the core function of a "full stub area"?

• A.Disable OSPF authentication and simplify the configuration process.
• B.Achieve indirect connection between non-backbone regions and Area 0.
• C.Disallow receiving Type 3/5/7 LSAs; only accept Type 1/2 LSAs and the default route, significantly reducing the number of route entries.
• D.Allows the import of external routes to the AS, while also receiving inter-area summary routes.

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In the deployment of the OSPF protocol in a wide area network, what is the core function of the
"ASBR (Autonomous System Border Router)"?

• A.Generate a Type 2 LSA to describe router information within the network.
• B.Generate a Type 3 LSA to describe the summarized routes between areas.
• C.Connect OSPF Autonomous Systems with other Autonomous Systems and pass external routes from the AS.
• D.Connect different OSPF areas and pass inter-area routes.

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