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.
An alternate port acts as a backup of the root port and provides an alternate path from the designated bridge to the root bridge.
https://support.huawei.com/enterprise/es/doc/EDOC1100117012/2bd0e592/rstp-port-roles-and-port-states
B, false for this. Back up for root port should be alternate port
upvoted 3 times
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