An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then what is the role of the port?

• A.Root port
• B.Disable port
• C.Alternate port
• D.Designated port

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Which of the following commands can be used to view the router's CPU usage?

• A.display interface
• B.display cpu-usage
• C.display memory
• D.display cpu-state

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As shown in the figure, RTA uses NAT technology and realizes multiple-to-multiple NAPT address translation by defining an address pool, so that hosts in the private network can access the public network. Suppose that there are only two public IP addresses in the address pool, and they have been assigned to hosts A and B for address conversion, and if host C also wants to access the public network, which of the following description is correct?

• A.RTA assigns the interface address (200.10.10.3) to host C, host C can access the public network
• B.Host C cannot be assigned a public network address and cannot access the public network
• C.All hosts can access the public network by using the public network address in turn
• D.RTA converts the source port of host C, and host C can access the public network

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The two switches shown below have both enabled the STP protocol. An engineer made the following conclusions on this network. Which conclusions do you think are correct? (Multiple choice)

• A.Both ports of SWA are designated ports
• B.Both ports of SWB are designated ports
• C.The G0/0/2 port of SWA is stable in Forwarding state
• D.G0/0/2 port of SWB is stable in Forwarding state
• E.The G0/0/3 port of SWA is stable in Forwarding state

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Which of the following descriptions about spanning tree designated ports is correct?

• A.The designated port can forward configuration BPDU messages to the network segment connected to it.
• B.The port on the root switch must not be a designated port.
• C.Each switch has only one designated port.
• D.The port on the root switch must be a designated port.

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