RSTP

B

RSTP and STP operate on switches and are based on the exchange of Bridge Protocol Data Units (BPDUs) between switches. One of the most important fields in

BPDUs is the Bridge Priority in which the MAC address is used to elect the Root Bridge -> RSTP operates at Layer 2 ?Data Link layer -> .

RSTP (Rapid Spanning Tree Protocol) is used to prevent loops in a network by providing a fast convergence time, which helps in maintaining network stability. The Spanning Tree Protocol (STP) is used to prevent loops in a network, but RSTP is an updated version of STP that provides faster convergence time.

In the OSI model, the data link layer (Layer 2) is responsible for the reliable transmission of data across a physical network link. This layer provides error-free delivery of data between adjacent devices, and it uses protocols like Ethernet, Token Ring, and FDDI to achieve this.

RSTP is a Layer 2 protocol that is used to prevent loops in a network by disabling redundant links and selecting the best path to the root bridge. When a link fails, RSTP can quickly detect the failure and reroute traffic to avoid the failed link, thereby preventing loops and ensuring network stability.

Therefore, the correct answer to the question is B. data link, as RSTP operates at this layer of the OSI model.