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Which two states are the port states when RSTP has converged? (Choose two.)
A. discarding
B. listening
C. learning
D. forwarding
E. disabled
Answer: AD
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.
A and D are correct. since the question is about converged rstp
C is right. The questions tells about converged: A and D.
C & D
The question is referring to a “converged” network. So there can’t be any ports in the Learning state. All interfaces should be either forwarding or discarding packets. So A and D are the correct answers.
Sorry, Correct answers should be C & D. not B & D
Correct Answers should be: Learning / Forwarding so B & D.