In a wide area network (WAN) IPv6 transition scenario, if "an enterprise needs to provide both IPv4 and IPv6 services to the outside world, but only deploys IPv4 internally," which of the following technologies should be adopted?

• A.NAT464 (translates external IPv6 addresses into internal IPv4 addresses, allowing direct access from external IPv4 addresses)
• B.IPv6 over IPv4 tunnel (only allows access from IPv6 terminals)
• C.IPv4/IPv6 dual-stack technology (internal devices must support IPv6)
• D.Disable IPv6 service and only provide IPv4 service.

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In Huawei's SD-WAN solution, which of the following technologies can "automatically synchronize branch devices with headquarters' security policies (such as ACLs and firewall rules) without manual configuration"?

• A.Branch devices use default security policies that are not synchronized with headquarters.
• B.Import the policy configuration document manually into branch devices via email.
• C.Manually log in to the branch device and configure security policies one by one.
• D.Automatic distribution of SD-WAN security policies (headquarters configures templates, branches automatically synchronize).

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In an MPLS VPN network, when a data packet is forwarded from the PE device to the CE device, which of the following operations will the PE device perform to process the tag?

• A.Strip the outer public network label, retain the inner VPN label, and forward it to CE.
• B.Retain the double-layer label and forward it directly to the CE device.
• C.Retain the outer public network label, only strip the inner VPN label.
• D.Simultaneously strip the outer public network label and the inner VPN label, and forward the data to CE according to the IP address.

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(When you configure a virtualized campus network on iMaster NCE-Campus, creating a virtual network is equivalent to creating a VPN instance to isolate different services.)

• A.TRUE
• B.FALSE

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In the Huawei SD-WAN iMaster NCE-WAN management platform, which of the following functions can "simulate different link failure scenarios (such as internet link interruption) to test whether service switching is normal"?

• A.Equipment hardware failure alarm
• B.Configure compliance checks
• C.Bandwidth usage statistics
• D.Network Fault Simulation and Drills

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