Which two states are the port states when RSTP has converged? (Choose two.)

Which two states are the port states when RSTP has converged? (Choose two.)
A . discarding
B . listening
C . learning
D . forwarding
E . disabled

View Answer

Answer: A, D

Explanation:

Understanding Rapid Spanning Tree Protocol (802.1w)

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_white_paper09186a0080094cfa.shtml

Port States

There are only three port states left in RSTP that correspond to the three possible operational states. The 802.1D disabled, blocking, and listening states are merged into a unique 802.1w discarding state.

RSTP only has 3 port states which are discarding, learning and forwarding. When RSTP has converged there are only 2 port states left: discarding and forwarding.