In Huawei's SD-WAN solution, for the scenario where " branches need to access both headquarters VPN services and public internet services simultaneously," which of the following technologies can "achieve traffic splitting and forwarding of the two types of services on the same physical link"?

• A.Traffic routing strategy based on business type (VPN traffic goes through a tunnel, public network traffic is forwarded directly).
• B.All business operations are routed through headquarters before accessing the public network, increasing latency.
• C.Only allow access to the VPN service; prohibit internet access.
• D.Use two independent physical links, each carrying different services.

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In Huawei's WAN solution, for "database query traffic transmitted across regions (such as SQL queries)," which of the following technologies can "reduce query response latency and improve database access efficiency"?

• A.Database query result caching technology (edge node caching of duplicate query results)
• B.Directly transmit query requests and results without optimization.
• C.Only increase link bandwidth, without optimizing the query mechanism.
• D.Reduce the priority of query requests and process them during idle periods.

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In Huawei's SD-WAN solution, which of the following technologies can "automatically re-establish a VPN tunnel with headquarters after a branch device changes its public IP address, without manual intervention"?

• A.Fixed public IP address for branch offices; dynamic changes are not supported.
• B.SD-WAN Dynamic IP Adaptation Technology (Automatically detects changes in public IP address and re-initiates tunnel connection)
• C.Manually reconfigure VPN tunnel parameters and update the public IP address.
• D.Disable the VPN tunnel automatic reconnection function; manual triggering is required.

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In Huawei's WAN solution, for scenarios with " high packet loss rate in WAN links (e.g., >5%)", which of the following technologies can "ensure data transmission reliability through retransmission and error correction mechanisms"?

• A.Ignoring packet loss and taking no action leads to data loss.
• B.Packet loss recovery technology based on forward error correction (FEC) (sending redundant data to achieve local packet loss recovery)
• C.Relies solely on TCP retransmissions and does not handle network layer packet loss.
• D.Reduce the transmission rate to forcibly reduce the probability of packet loss.

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(What are the respective protocol numbers of AH and ESP?)

• A.6 and 17
• B.51 and 50
• C.50 and 51
• D.17 and 57

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