A.GE0/0/4

B.GE0/0/5

C.GE0/0/2

D.GE0/0/3

A.172.16.1.1

B.172.16.1.128

C.172.16.1.253

D.172.16.2.0

A.GE interface and FE interface cannot be added to the same Eth-Trunk interface.

B.Eth-Trurnk interfaces cannot be nested.

C.When two devices are connected, it is necessary to ensure that the link aggregation mode on both devices is the same.

D.GE electrical interfaces and GE optical interfaces cannot be added to the same Eth-Trurnk interface.

A.The IP address of the accounting server is 200.0.12.1

B.The IP address of the authentication server is 200.0.12.1

C.The IP address of the authorization server is 200.0.12.1

D.The source IP source address of the Radius packet sent by the router is 200.0.12.2

A.Improve the survival time of BPDUs to ensure that the configured BPDUs can be forwarded to more switches

B.There is a delay when the B1ocking state and the Disabled state are converted

C.Reduce the time interval of BPDu sending. Improve the convergence speed of STP

D.Prevent temporary loops