In RSTP, a backup port can replace a faulty root port.

2 thoughts on “In RSTP, a backup port can replace a faulty root port.”

1. B is correct (Alternative port will replace fault root port )

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2. Correct answer is B
   “A backup port acts as a backup of the designated port and provides a backup path from the root bridge to the related network segment.”
   https://support.huawei.com/enterprise/en/doc/EDOC1100117012/2bd0e592/rstp-port-roles-and-port-states

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