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…

Spanning Tree Protocols

Question

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

(29 responses)

A
10% (3)
B
83% (24)
D
7% (2)

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

Topics

#RSTP#backward compatibility#STP interoperability#single root bridge

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