The Differences Between a Gateway, a Modem, a Router, a Switch and a Hub
||What is does
||Convert information from one format to another.
- The proper technical term for a DSL, FiOS, or Cable "modem" is a gateway because with DSL and cable, the data remains in a digital format from the customer's network to the ISP and internet.
- Since the digital data is not converted to an analog data, the device is technically not a modem.
- However, since calling a DSL/cable gateway a modem is a term many people easily understand, it the 2 terms are used interchangeably.
- Typcially, routers today will perform the functionality of both a router and a switch - that is, the router will have multiple ethernet ports that devices can plug into.
- In a similar vein, combination "modem/routers" are actually typically performing the roles of a gateway, a router, and a switch.
||Stands for modulate demodulate.
They allow devices to communicate with other remote devices by converting digital data into analog data and transmitting it over an analog telephone line.
||Are responsible for sending data from one network to another.
||They use the MAC address of a device to send data only to the port the destination device is plugged into.
||Unlike switches, hubs broadcast data to all ports, which is inefficient.