Layer 1 vs layer 2 switch

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Understanding these differences will help delve into the differences between basic networks where there is are primarily responsible for transmitting data frames between devices.

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What is Layer 3 protocol? ( Layer 1 vs. Layer 2 vs. Layer 3 )
A switch is usually a layer 2 device and modem is layer 1 device, but the router, which is between both of them, is layer 3. It seems a bit. Physical Layer Switching operates at Layer 1 of the OSI Model and allows users to connect any port to any other port within the system. Layer 1. Layer 2 and Layer 3 differ mainly in the routing function. A Layer 2 switch works with MAC addresses only and does not care about IP addresses.

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This standard packaging has fields for the hardware MAC address of the sender, the receiver, the VLAN it belongs to, and a few other fields which help in the delivery process. It is not at all weird that a Modem is layer 1, and connects to a layer 3 router, which itself connects to a layer 2 switch. Encapsulation of the packet changes only when the data packet passes through dissimilar media such as from Ethernet to FDDI.