Which of the following understanding of DR/BDR is wrong? (Multiple choice)

• A.In a broadcast network, DR and BDR must be elected. Without either DR or BDR, the broadcast network cannot work properly
• B.The network address monitored by DR other is 2240.0.6
• C.The multicast address that DR other monitors is 224.0.0.5
• D.All DR other only establish adjacency with DR and BDR

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In BGP, MED is used as a metric value to indicate to external peers the preferred path into this AS. By default, the router compares the MED values of BGP routes from different ASs. The smaller the MED attribute value, the better the BGP route.

• A.TRUE
• B.FALSE

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Which description of the LACP protocol is correct? (Multiple choice)

• A.The devices at both ends determine the active interface according to the LACP priority and interface ID of the passive interface
• B.Based on IEEE802.3au standard.
• C.The devices at both ends determine the active end according to the system LACP priority and system
• D.Exchange information with the peer through LACPDU (Link Aggregation Control Protocol Data Unit)

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As shown in the figure is part of the configuration of the router RTA.

Regarding the description of this part of the configuration, which of the following items are correct? (Multiple choice)

• A.The OSPF process number of this router is 100
• B.The IP address of this interface cannot be used as the Router ID of OSPF.
• C.The directly connected route of interface GigabitEthernet 1/0/0 can be published to the OSPF database.
• D.The interface cannot send any OSPF packets and will ignore the received OSPF packets.

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Which of the following fields is not included in the LS Request message?

• A.Link state type
• B.Database Description Sequence Number
• C.Link State ID
• D.Advertising Router

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