COMPUTER NETWORKING

Detailed explanation-1: -A network switch is a physical device that operates at the Data Link layer of the Open Systems Interconnection (OSI) model–Layer 2. It takes in packets sent by devices that are connected to its physical ports, and forwards them to the devices the packets are intended to reach.

Detailed explanation-2: -Switching in data link layer is done by network devices called bridges.

Detailed explanation-3: -An Ethernet switch operates at the data link layer (layer 2) of the OSI model to create a separate collision domain for each switch port. Each device connected to a switch port can transfer data to any of the other ports at any time and the transmissions will not interfere.

Detailed explanation-4: -The data link layer is divided into two sublayers: Logical Link Control (LLC) sublayer provides the logic for the data link. Thus, it controls the synchronization, flow control, and error checking functions of the data link layer.