單項(xiàng)選擇題

Which statement correctly describes the Cisco implementation of RSTP？（）

A.PortFast， UplinkFast， and BackboneFast specific configurations are ignored in Rapid PVST mode.
B.RSTP is enabled globally and uses existing STP configuration.
C.Root and alternative ports transition immediately to the forwarding state.
D.Convergence is improved by using sub-second timers for the blocking， listening， learning， and forwarding port states.

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多項(xiàng)選擇題

Which two statements correctly describe UDLD？（）

A.Unidirectional link detection is achieved through monitoring STP BPDUs.
B.It is recommended that it be enabled globally rather than on an individual port.
C.When an error is detected， normal mode will disable a port.
D.It is recommended that it be enabled in normal mode.
E.It is recommended that it be used with the loop guard feature.

單項(xiàng)選擇題

Which statement correctly describes enabling BPDU guard on an access port that is also enabled for PortFast？（）

A.Upon startup， the port transmits 10 BPDUs. If the port receives a BPDU， PortFast and BPDU guard are disabled on that port and it assumes normal STP operation.
B.The access port ignores any received BPDU.
C.If the port receives a BPDU， it is placed into the error-disable state.
D.BPDU guard is only configured globally and the BPDU filter is required for port-level configuration.

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Which statement correctly describes the Cisco implementation of RSTP？ （）

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Which two statements correctly describe UDLD？ （）

Which statement correctly describes enabling BPDU guard on an access port that is also enabled for PortFast？（）

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Which statement correctly describes the Cisco implementation of RSTP？（）

Which two statements correctly describe UDLD？（）