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发表于 2011-10-20 00:42:15
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9tut上的答案和解释。与楼主的不同,请确认。
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Which two states are the port states when RSTP has converged? (choose two)3 h8 f+ w2 U; ]# g7 X! ?
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A. blocking
/ l8 c) `3 j5 p- a0 B SB. learning % S# D& C, @6 ]2 o0 j$ B a8 K
C. disabled
% u/ p8 P4 W* P/ q5 L uD. forwarding
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Answer: A D( y0 w% [$ G4 H0 R8 J! U3 L
& x2 m4 \7 [# k+ KExplanation
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# O1 e+ v, H4 A: R" k( ZRSTP only has 3 port states that are discarding, learning and forwarding. When RSTP has converged there are only 2 port states left: discarding and forwarding but the answers don’t mention about discarding state so blocking state (answer A) may be considered the best alternative answer.
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2011-10-20 00:42:15
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