Hub
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Introduction
Hubs are devices used by networks to connect wired devices to a single network. Unlike switches, hubs are relatively simple devices that take any data received and repeat it on all of their ports. This makes for a much simpler device, however it also means that the available bandwidth must be shared between all devices on the network.
As switches have become more common in recent years, the price premium has all but evaporated. As such, there is little reason for users to purchase hubs at this stage in the game. Switches provide faster transfer rates and better security (as data isn't broadcast to all stations) so they are almost always preferable.
Usage
Hubs and switches form the fabric of a computer network - they allow a number of devices to communicate with one another and, when connected to a router, allow them to access other networks (such as the Internet). All devices connected to a hub can communicate with one another. Additionally, modern hubs can also be attached to one another, thus allowing users to expand the network by chaining a number of hubs together.
See Also
- Switches - Perform the same function as a hub, however they inteligently direct traffic in order to maximize bandwidth utilization.
- Routers - Connect a number of different networks together while providing basic layers of isolation.
- Access Points - Devices that connect wired networks with wireless ones. Behave in a manner very similar to that of a switch.
