In Huawei's SD-WAN solution, which of the following functions can "monitor the status of the VPN tunnel between branches and headquarters in real time (such as establishment/disconnection, encryption algorithm)"?

• A.Service Traffic Bandwidth Statistics
• B.Equipment hardware resource monitoring
• C.VPN Tunnel Status Monitoring and Alerts
• D.Link Quality Probe (LQM)

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In the WAN BGP protocol, if "EBGP neighbors are configured with MD5 key authentication, but the keys are inconsistent," which of the following problems will this cause?

• A.BGP neighbor relationships are established normally, and route transmission is unaffected.
• B.BGP neighbor relationships are established normally, but routes cannot be transmitted.
• C.BGP neighbor relationships could not be established (authentication failed).
• D.Automatically switches to unauthenticated mode, and neighbor relationships are established normally.

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In MPLS VPN network troubleshooting, if it is necessary to "view the ARP table of the VPN instance on the PE device to confirm whether the CE device's MAC address is being learned normally", which of the following commands should be used?

• A.display bgp vpnv4 all routes
• B.Display IP routing-table VPN instance [instance name]
• C.display mpls lsp
• D.display arp VPN instance [instance name]

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In Huawei's WAN management platform, which of the following functions can "set link quality threshold alarms (such as alarms when latency > 100ms or packet loss rate > 5%) to promptly detect link anomalies"?

• A.Equipment hardware resource monitoring
• B.Link bandwidth statistics report
• C.Link quality monitoring and threshold alarms
• D.Configure compliance checks

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In an MPLS VPN network, which of the following descriptions does NOT conform to the characteristics of a "VPN Instance (VRF)"?

• A.VRF needs to be configured on the P device to identify VPN labels.
• B.Routes between different VRFs are not interconnected by default, thus achieving isolation.
• C.VRF can be bound to the physical interface or sub-interface of the PE device.
• D.Each VRF has its own independent routing table and ARP table.

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