Huawei's two switches SWA and SWB are connected together by 7 Ethernet cables, and static link clustering is configured, and the corresponding port on the switch SWA is Ethernet 1/0/1?Ethernet1/0/2?Ethernet 1/0/3?Ethernet 1/0/4?Ethernet 1/0/5, Ethernet1/0/6, Ethernet 1/0/7, configured in order of port if the switch SWA, SWB supports only 6 ports per aggregation group

• A.In the case of consistent configuration of each port, the Ethernet1/0/1 port is an aggregate group Unselected port
• B.With the same configuration of each port, SWA randomly selects one of the 7 ports as the aggregate group Unselecte port
• C.In the case of consistent configuration of each port, Ethernet 1/0/6 port is an aggregate group Unselected port
• D.With the same configuration of each port, the Ethernet 1/0/7 port is the aggregate group Unselecte port

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What is the following description of LDP reliability?

• A.LGP GR (Graceful Restart) takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed
• B.The LDP ERR can also generate an ISP for a tag map from a non-optimal next hop, and create a forwarding table entry as a backup of the primary LSP
• C.LDP and LGP linkage, the need for IGP to suppress the release of routes, to ensure that LDP and LGP paths are consistent
• D.Manually configured LDP FRR policy defaults to a 32-bit backup route that triggers LDP to establish a backup ISP

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Auto-negotiate mode is to obtain the maximum interface rate and operating mode, the network administrator configures all Ethernet interface rates of a working switch to 10OMbps, and the operating mode is configured as Full-duplex, when a network card is configured After the auto-negotiate workstation is connected to the switch, the negotiation result is that the interface rate is 10OMbps and the working mode is half-duplex, which of the following explanations is the most reasonable for this phenomenon?

• A.STP initializes the port into the blocking state, causing auto-negotiation to fail, so the port should be configured as an edge port
• B.Auto-negotiation is not configured on the switch, resulting in the switch not being able to send FLP messages to the workstation, causing the workstation to set its own operating mode to Half-duple
• C.Port rate negotiation is negotiated through the initial port sending FLP, and the operating mode is not negotiated through FLP
• D.At higher port rates and operating modes, the workstation's network interface card cannot be configured as auto-negotiate
• E.The problem is on the workstation's NIC, mostly due to the aging of the NIC driver on the workstation, which causes the workstation NIC to learn the interface rate and operating mode configured on the switch

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The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network

• A.True
• B.False

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Regarding the Stub region in the OSPF protocol, the following statement is correct.

• A.backbone areas that are not allowed in Stub regions cannot be configured as Stub regions.
• B.ASBR cannot exist in the Stub zone
• C.Injecting typeT LSA
• D.Virtual connections cannot traverse the Stub region.

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