The following topological diagrams are available, which of the following statements are correct? (Multiple Choice)

• A.There is no route with the destination network segment 10.0.2.2/32 on R1
• B.There is a route with the destination network segment 10.0.3.3/32 on R1
• C.There is no route with the destination network segment 10.0.3.3/32 on R1
• D.There is a route with the destination network segment 10.0.2.2/32 on R1

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If there is a Huawei switch running the STP protocol, and now the G0/0/17 interface and G0/0/18 interface of the switch are connected by a cable, which of the following descriptions about this scenario is correct?

• A.The G0/0/18 interface will continue to change back and forth between the listening state and the learning state
• B.Both the G0/0/17 interface and G0/0/18 interface will enter the Forwarding state
• C.Both the G0/0/17 interface and G0/0/18 interface will enter the Discarding state
• D.The G0/0/17 interface will enter the Blocking state
• E.The G0/0/18 interface will enter the Discard ing state

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When an administrator wants to manage some routes on the router during operation and maintenance, which of the following tools can mark these routes so that the administrator can configure the policy? (Multiple Choice)

• A.Use Tag value to mark routes on the router.
• B.If the BGP protocol is running, use the community attribute to mark the route.
• C.Use ACLs to mark routes on the router.
• D.Use ip-prefix to mark routes on the router.

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BGP 4+ runs between the two routers. The neighbor relationship is normal. However, the BGP routing table of the local router does not have neighbor's routing entry. What is the possible reason? (Multiple Choice)

• A.Active-route-advertise configured on the peer
• B.The routing entries of the peer BGP routing table are non-optimal.
• C.Peer ignore configured on the peer
• D.The next hop address of the BGP routing entry is unreachable.

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Which of the following statements are correct about PPPoE data frames? (Multiple Choice)

• A.When PPPoE is used to transfer session data, Code must be set to 0x0.
• B.After the PPPoE session is established, all Ethernet packets are unicast.
• C.The Session_ID segment of the ppp session must be the value specified in the Discovery phase and cannot be changed.
• D.The fixed value of the Ethernet Type field is Ox8863.

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