At which layer of the OSI model is RSTP used to prevent loops?
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A. B. C. D.B
RSTP (Rapid Spanning Tree Protocol) is a protocol used to prevent loops in a network. It is an improved version of the Spanning Tree Protocol (STP), which was developed to prevent loops in Ethernet networks by blocking redundant paths.
The OSI (Open Systems Interconnection) model is a conceptual model that describes how data is transmitted over a network. The model is divided into seven layers, each responsible for a different aspect of data transmission.
The correct answer to the question is B. data link. RSTP operates at the data link layer (layer 2) of the OSI model. This layer is responsible for the reliable transmission of data across a single physical link.
At this layer, RSTP is used to prevent loops by determining the shortest path between switches and blocking redundant paths. This ensures that there is only one active path between any two devices on the network, preventing loops and ensuring that data is transmitted efficiently.
In summary, RSTP is used at the data link layer of the OSI model to prevent loops by determining the shortest path between switches and blocking redundant paths.