When the host frequently moves, which VLAN division method is most appropriate? ()

• A.Based on strategy division
• B.Based on MAC. Address division
• C.Based on IP subnetting
• D.Based on port division

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Which of the following statements about the default route are correct? (Multiple Choice)

• A.In the routing table, the default route appears as a route to the network 0.0.0.0 (the mask is also 0.0.0.0)
• B.If the destination address of the message cannot match any other routing entries in the routing table, the router will forward the message according to the default route
• C.The default route can only be manually configured by the administrator
• D.There must be a default route in the routing table of any router

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Which of the following port states does the RSTP protocol include? (Multiple choice)

• A.Listening
• B.Learning
• C.Discarding
• D.Forwarding

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Which of the following IEEE802.11 standards only supports the 2.4GHz frequency band for communication? ()

• A.802.11ax
• B.802.11a
• C.802.11g
• D.802.11n

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Which of the following statements about the usage scenarios of the DHCP protocol is correct? ()

• A.network does not allow multiple DHCP servers
• B.DHCP client and DHCP server must be connected to the same switch
• C.After receiving the DHCP request or response message, the DHCP relay does not modify the message format and forwards it directly
• D.If the DHCP client and the DHCP server are not on the same network segment, the DHCP relay needs to be used to forward DHCP messages

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