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配置7353 每个bridge port口下最大mac数
- A、8
- B、16
- C、32
- D、64
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单选题Which statement is correct about RSTP port roles？（）A
The designated port is the switch port on every nonroot bridge that is the chosen path to theroot bridge. There can be only one designated port on every switch. The designated portassumes the forwarding state in a stable active topology. All switches connected to a given segment listen to all BPDUs and determine the switch that will be the root switch for a particular segment.B
The disabled port is an additional switch port on the designated switch with a redundant link to the segment for which the switch is designated. A disabled port has a higher port ID than the disabled port on the designated switch. The disabled port assumes the discarding state in astable active topology.C
The backup port is a switch port that offers an alternate path toward the root bridge. The backup port assumes a discarding state in a stable， active topology. The backup port will be present on nondesignated switches and will make a transition to a designated port if the current designated path fails.D
The root port is the switch port on every nonroot bridge that is the chosen path to the root bridge. There can be only one root port on every switch. The root port assumes the forwarding state in a stable active topology.
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单选题The classic Spanning Tree Protocol （802.1D 1998） uses which sequence of variables to determine the best received BPDU？（）A
lowest root bridge id；lowest sender bridge id；lowest port id；lowest root path costB
lowest root path cost；lowest root bridge id；lowest sender bridge id；lowest sender port idC
lowest root bridge id；lowest sender bridge id；lowest root path cost；lowest sender port idD
lowest root bridge id；lowest root path cost；lowest sender bridge id；lowest sender port id
考题
单选题The classic Spanning Tree Protocol （802.1D 1998） uses which sequence of variables to determine the best received BPDU？（）A
1） lowest root bridge id，2）lowest sender bridge id，3）lowest port id，4）lowest root path costB
1） lowest root path cost，2）lowest root bridge id，3）lowest sender bridge id，4）lowest sender port idC
1） lowest root bridge id，2）lowest sender bridge id，3）lowest root path cost 4）owest sender port idD
1） lowest root bridge id，2）lowest root path cost，3）lowest sender bridge id，4）lowest sender port id
考题
单选题GPON每个UNI端口支持的最大mac地址数（）。A
16B
64C
128D
32
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