What is the difference between a network switch and a network router?
The router is a device that some think of as a "dispatcher" which sits between two networks and directs data traffic, connecting one network to another. One of the most common examples given of router function is where a LAN router connects a small home network, often wirelessly, to the internet.
Network switches, on the other hand, move data from one network device to another, efficiently, often by sending a localized signal to only one device, rather than broadcasting it to all local devices. Many network switches are cabled, where switches use MAC addresses or other identifiers to send signals from a dedicated port. Some switches work at multiple levels of the OSI model to do more specialized kinds of data packet control. These are called "multilayer switches."
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