In MPLS In troubleshooting VPN network problems, if "VPNv4 routes are being transmitted normally between PE devices, but CE devices still cannot communicate with each other," which of the following troubleshooting steps should be performed first?

• A.Check if the binding relationship between the VPN instance and the interface on the PE device is correct.
• B.Check if the BGP VPNv4 neighbor between PE devices is established normally.
• C.Check if the BGP neighbor for the CE device is established correctly.
• D.Check if the MPLS LSP is established on the P device.

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In Huawei's SD-WAN solution, for the scenario of " branch multi-link (MPLS + Internet + 5G) load balancing", which of the following technologies can "dynamically adjust the traffic allocation ratio according to the real-time bandwidth utilization of the link"?

• A.Randomly allocate traffic to each link, without considering bandwidth utilization.
• B.Dynamic load balancing based on link bandwidth utilization (reducing traffic on links with high utilization and increasing traffic on links with low utilization).
• C.All traffic is prioritized to use the MPLS link; other links are only used as cold backups.
• D.Allocate traffic according to a fixed ratio (e.g., 40% MPLS, 30% Internet, 30% 5G), without adjusting for bandwidth changes.

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In Huawei's SD-WAN solution, which of the following service optimization strategies can "assign the highest priority to VoIP services to ensure smooth calls"?

• A.Traffic distribution based on link bandwidth
• B.Limit VoIP service bandwidth to avoid consuming excessive resources.
• C.All services are forwarded with the same priority.
• D.QoS priority scheduling based on application type (VoIP is the highest)

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(To isolate communication between wired terminals, you can enable port isolation on the access switches.
However, APs cannot implement wireless user isolation.)

• A.TRUE
• B.FALSE

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(Which of the following encryption algorithms isnot supportedby IPsec VPN?)

• A.DSA
• B.3DES
• C.DES
• D.AES

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