In the OSPF protocol for wide area networks, which type of LSA will the ABR of a "Stub area " publish to the area to guide routers within the area to access external networks?

• A.Type 3 LSA Inter-area summary route
• B.Type 5 LSA (AS External Route)
• C.Type 7 LSA (NSSA External Router)
• D.Type 3 LSA default route (0.0.0.0/0)

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In Huawei's WAN bandwidth management solution, which of the following functions can "protect the bandwidth usage of specific users (such as executives) and ensure that their business is not affected by other users"?

• A.Disable network access for other users, allowing only executives to use it.
• B.Limit bandwidth for other users, ensuring only access for senior management.
• C.User-based bandwidth guarantee policy (configuring minimum guaranteed bandwidth for senior management)
• D.All users share bandwidth, with no priority distinction.

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In troubleshooting MPLS VPN networks, if "MPLS LSPs have been established between PE devices, but VPN data still cannot be transmitted," which of the following troubleshooting steps should be performed first?

• A.Check if the IP address of the CE device is configured correctly.
• B.Check if the binding relationship between the VPN instance and the interface on the PE device is correct.
• C.Check if the BGP VPNv4 neighbor between PE devices is established normally.
• D.Check if the MPLS protocol configuration on the P device is correct.

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In an MPLS VPN network, which of the following failures would cause "PE devices to be unable to advertise VPN routes to other PE devices"?

• A.OSPF neighbor between PE and CE is established normally.
• B.The MPLS protocol has been configured on the D.P device.
• C.BGP VPNv4 address family is enabled on the PE device.
• D.BGP VPNv4 neighbors have not been established between PE devices.

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(Which of the following is used to implement inter-subnet communication on a VXLAN network and allow access from a VXLAN network to an external non-VXLAN network?)

• A.Layer 3 VXLAN gateway
• B.VLANIF interface
• C.NVE interface
• D.Layer 2 VXLAN gateway

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