JN0-346 · Question #28
Which two statements about RSTP are correct? (Choose two.)
The correct answer is B. RSTP is backwards compatible with STP. C. RSTP permits multiple root bridges within a Layer 2 domain. B: RSTP and STP can co-exist. RSTP achieves its rapid converges over STP through new mechanisms. If a RSTP switch connects to an STP switch, the RSTP switch will drop down to STP convergence speeds on a per-port basis. C: Unlike 802.1d (STP), 802.1w (RSTP) uses Hello packets…
Question
Which two statements about RSTP are correct? (Choose two.)
Options
- ARSTP is not backwards compatible with STP.
- BRSTP is backwards compatible with STP.
- CRSTP permits multiple root bridges within a Layer 2 domain.
- DRSTP permits only a single root bridge within a Layer 2 domain.
How the community answered
(44 responses)- A11% (5)
- B82% (36)
- D7% (3)
Explanation
B: RSTP and STP can co-exist. RSTP achieves its rapid converges over STP through new mechanisms. If a RSTP switch connects to an STP switch, the RSTP switch will drop down to STP convergence speeds on a per-port basis. C: Unlike 802.1d (STP), 802.1w (RSTP) uses Hello packets between bridges to maintain link states and does not rely on the root bridge. states-roles.html
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