On the routing convergence, the following statements is most accurate

• A.Network convergence is due to changes caused by the change process
• B.Convergence of two routers to their routing tables into a single process
• C.Convergence refers to the routers send hello packets among neighbors in the process to form
• D.Convergence of the network routing tables of all the synchronization process, or simply can be defined as a router on the network changes to take appropriate measures to achieve steady-state process

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The output information of switch SW port is as follows: Which is wrong with the following statement?

• A.The switch is not a root bridge
• B.The period for sending BPDU on this port is 2s.
• C.Forward-delay is 20s
• D.Configure the Max Age of the BPDU to be 20s.

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Ethernet frames are processed and forwarded in the form of ULAN TAGs inside the switch.

• A.False
• B.True

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STP root switch priority range is 0 65536

• A.Wrong
• B.Yes

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The administrator cannot use telnet to manage the AR2200. The administrator is able to verify connectivity to the router and has been informed that other administrators have no difficulties using telnet.
Which statements describe the possible reasons for this problem? (Choose all that apply.)

• A.The user's privilege level has been changed to 0.
• B.The user's status has been blocked
• C.The user has been deleted.
• D.The telnet service in the AR2200 router has been disabled.

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