The modem (short for a modulation/demodulation device) was developed as a way to port data onto the emerging Internet through telephone lines and other infrastructure. One is the modem, which typically operates as a bridge to the greater Internet. For example, there are full-duplex and half-duplex network adapters, as well as various designs rated by speeds from megabytes per second to gigabytes per second, or, for cutting-edge technologies, magnitudes of order greater than the gigabyte (tera – peta – zeta – etc.) Adapters, Modems and RoutersĪnother way to think about the network adapter is to contrast its role in the network to other devices that end users sometimes confuse with the network adapter itself. Network administrators and others can evaluate network adapters according to their design and speed. They can also be an antenna using standards based on 802.11. Network adapters have many form factors – they can be a USB dongle or an ethernet jack into an RJ-45 port. All of these types of devices connect a computer to a network, which is the fundamental definition of the network adapter in general. It may also be referred to as a network interface controller or a network card. It has also historically been referred to as a Network Interface Card ( NIC), especially when it operated as an expansion plugged into a particular workstation. Some of the terminologies around network adapters can be confusing.
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