There are hosts in a private network that need to access the Internet. In order to achieve this requirement, which of the following configurations should the administrator do on the edge router of the network?

• A.NAT
• B.Default routing
• C.DHCP
• D.STP

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Which of the following statements about single-arm routing are correct? ()*

• A.Need to create a subinterface on the router
• B.On the switch, configure the port connected to the router as a Trunk port and allow the relevant vlan frames to pass
• C.One physical connection per vlan
• D.Only one physical link is used between the switch and the router to connect

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Which of the following advantages does the single-arm routing approach achieve inter-VLAN routing and intercommunication? ()

• A.Reduce the number of equipment
• B.Reduce the use of IP addresses
• C.Reduce routing table entries
• D.Reduce the number of link connections

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Which of the following statements about Adjacency Segment is wrong? ()

• A.Adjacency Segment is used to identify an adjacency of a node in the network
• B.Adjacency Segment must be configured manually
• C.Adjacency Segment is identified by Adjacency Segment ID. (SID)
• D.Adjacency Segment spreads to other network elements through the IGP protocol, which is visible globally and valid locally

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The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)

• A.After the switch restarts, all MAC addresses need to be relearned. The MAC address 5489-9885-18a8 is manually configured by the administrator
• B.The MAC address 5489-9811-0b49 is manually configured by the administrator
• C.The MAC address 5489-989d-1d30 is manually configured by the administrator
• D.The MAC address 5489-9885-18a8 is manually configured by the administrator

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