A network with five switches has been configured to run Rapid Spanning Tree Protocol (RSTP)
with default settings. How many seconds does it take to detect a failure between two neighboring
switches?
A.
2 seconds
B.
3 seconds
C.
6 seconds
D.
15 seconds
Answer is 6 seconds
JNCIS-ENT Study Guide Chapter 3-14
“If a neighboring bridge receives no BPDU with 3 times the hello interval
(3 x 2 = 6 seconds), connectivity to the neighbor is faulty
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