Which device is primarily used to connect multiple devices within the same local area network (LAN)?

Which device is primarily used to connect multiple devices within the same local area network (LAN)?

• A. Router
• B. Switch
• C. Hub
• D. Bridge

Answer: (B)

A switch is primarily used to connect multiple devices within the same local area network (LAN) because it effectively manages data traffic between connected devices. It operates at the data link layer (Layer 2) of the OSI model, allowing it to intelligently forward data packets based on the MAC addresses of the devices. When a switch receives a data frame, it examines the frame’s destination MAC address and only sends it to the specific port that leads to the intended destination device. This significantly reduces unnecessary traffic on the network and improves overall efficiency. Additionally, switches can support various network features, such as VLAN segmentation, port security, and Quality of Service (QoS), which further enhance network performance and management. In contrast, a hub indiscriminately broadcasts data to all ports, making it less efficient, while routers and bridges have different roles, with routers primarily connecting multiple networks and bridges serving to connect and filter traffic between network segments.

A switch is primarily used to connect multiple devices within the same local area network (LAN) because it effectively manages data traffic between connected devices. It operates at the data link layer (Layer 2) of the OSI model, allowing it to intelligently forward data packets based on the MAC addresses of the devices. When a switch receives a data frame, it examines the frame’s destination MAC address and only sends it to the specific port that leads to the intended destination device. This significantly reduces unnecessary traffic on the network and improves overall efficiency.

Additionally, switches can support various network features, such as VLAN segmentation, port security, and Quality of Service (QoS), which further enhance network performance and management. In contrast, a hub indiscriminately broadcasts data to all ports, making it less efficient, while routers and bridges have different roles, with routers primarily connecting multiple networks and bridges serving to connect and filter traffic between network segments.