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Modem,Cable,Bandwidth

August 3, 2009

Bandwidth:

In computer networking and other digital fields, the term bandwidth often refers to a data rate measured in bits/s, for example network throughput.

Bandwidth is the difference between the upper and lower cutoff frequencies of, for example, a filter, a communication channel, or a signal spectrum, and is typically measured in hertz.

Modem:

Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information.

Cables:

Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs.
Unshielded Twisted Pair (UTP) Cable
Shielded Twisted Pair (STP) Cable
Coaxial Cable
Fiber Optic Cable
Twisted pair Ethernet cable.

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