Ccna certification Practice Tests

C.  RSTP has a convergence time of around 50 seconds.

D.  RSTP has five port states to which the interfaces could possibly transition.

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Chapter 2 

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  Network Access (Domain 2) 

71

 125.  How do switches participating in an STP network become aware of topology changes?

A.  The root bridge is responsible for sensing the change and sending Topology Change 

Notification BPDUs.

B.  Each switch is responsible for sensing the change and sending Topology Change Noti-

fication BPDUs.

C.  The root bridge polls each switch participating in STP for changes.

D.  The switches participating in STP poll the root bridge for changes.

 126.  Which of the following standards is an IEEE standard that replaces Rapid PVST+?