Switches move frames of information at the __________ Layer of the OSI model.

• A. Physical Layer
• B. Data-Link Layer
• C. Network Layer
• D. Transport Layer

Answer: (B)

Frames are handled at the Data-Link Layer of the OSI model. This layer is responsible for creating, addressing, and transferring data frames across a local link, using MAC addresses to identify devices. A switch listens to incoming frames, learns which devices live on which ports, and forwards each frame only to the destination port, efficiently connecting devices within the same network segment. The unit of data here is a frame, not a packet, which is why switching occurs at this layer. Other layers deal with different units: the Physical Layer moves the raw bits, the Network Layer routes packets using IP addresses, and the Transport Layer manages end-to-end delivery using segments. So the correct layer where switches move frames is the Data-Link Layer.