Which two statements are true about STP root guard? (Choose two.)
- Root guard is enabled on a per-port basis.*
- If a root guard enabled port receives a inferior BPDU from a nonroot switch, the port transitions to the blocking state to prevent a root bridge election.
- Root guard requires that PortFast be enabled on a switch port.
- Root guard re-enables a switch port once it stops receiving superior BPDUs.*
- Root guard should be configured on all ports on the desired root bridge to prevent another bridge from becoming the root.
More Questions: CCNP SWITCH Chapter 4 Exam Answers