In Huawei's WAN bandwidth optimization solution, for "database synchronization traffic transmitted across regions (such as MySQL synchronization)," which of the following technologies can "reduce data synchronization latency and ensure data consistency"?

• A.Database protocol-based optimization techniques (such as SQL statement compression and transaction merging)
• B.Reduce the synchronization frequency and decrease the number of transmissions.
• C.Only increase link bandwidth without optimizing the synchronization mechanism.
• D.Directly transmit synchronized data without optimization.

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In an MPLS VPN network, when a PE device forwards VPN packets to a P device, which type of tag will it encapsulate on the outer layer of the packet for backbone network forwarding?

• A.Forward by IP address without encapsulating any tags.
• B.VPN label (inner label, identifying the VPN instance)
• C.Only VPN label is encapsulated, no public network label.
• D.Public network label (outer label, identifying the backbone network forwarding path)

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In an MPLS VPN network, which of the following operations can "ensure that the PE device correctly associates with the corresponding VPN instance after receiving a VPNv4 route"?

• A.Configure the BGP protocol on the CE device and specify the VPN instance.
• B.Configure a VPN instance on the P device to pass routing association information.
• C.Configure routing policies on the PE device to import VPNv4 routes to the corresponding VPN instance.
• D.No configuration is required; the PE device automatically associates with the VPN instance.

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

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(On a CloudCampus virtualized campus network, which of the following modes can be used by a fabric to connect to external networks?Choose all that apply.)

• A.Layer 3 shared egress
• B.Layer 2 exclusive egress
• C.Layer 2 shared egress
• D.Layer 3 exclusive egress

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