Which layer of protocol does ARP belong to

• A.data link layer
• B.Transport layer
• C.Physical layer
• D.Network layer

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In the WLAN network architecture, what is terminal equipment that supports the 802.11 standard called?

• A.Client
• B.STA
• C.AC
• D.AP

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Which of the following descriptions about the switch is wrong?

• A.Switches generally work at the data link layer
• B.The switch can provide network access services for terminal devices (PC/server)
• C.The switch can complete the exchange of data frames
• D.The switch is generally used as the export equipment of the network

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The controller is the core component of SDN. The controller is connected to the device through the southbound interface. The following is missing from the controller southbound agreement? ()

• A.PCEP
• B.OpenFlow
• C.NETCONF
• D.SNMP

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The network administrator hopes that the data packets sent from host A. to host B. pass through the G0/0/3 interface between routers, and the data packets sent from host B. to host A. pass through G0/ between routers. 0/4 interface, which of the following commands can achieve this requirement? ()

• A.RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.6 RTB.:ip Route-statiC.0.0.0.00.0.0.0n11.0.12.1
• B.RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.2 RTB.:ipRoute-statiC.0.0.0.00.0.0.0ln11.0.12.5
• C.RTA.:ip route-statiC.10.0.12.5 255.255.B255.252 11.0.12.6 RTB.:ip route- static/n10.0.12.1255.255.255.25211.0.12.1
• D.RTA.:ip route-statiC.10.0.12.5 255.255.255.252 11.0.12.2 RTB.:ip route- static/n10.0.12.1255.255.255.25211.0.12.5

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