7-2 What are the different types of networks?

Hertz

1 = one cycle of the medium

Modem

Modulator-demodulated Cable M = connect computer to internet with cable network DSL M = connect computer to Internet with telephone company's landline network Wireless M = perform same function as traditional, connecting our computer to a wireless network that could be a cell phone network or a Wi-Fi Network.

Metropolitan Area Network (MAN)

a network that spans a metropolitan area, usually a city and its major suburbs, its geographic scope falls between a WAN and a LAN

Local Area Network (LAN)

designed to connect personal computers and other digital devices within a half-mile or 500-meter radius -typically connect a few computers in a small office, all the computers in one building, or all the computers in several building in close proximity -used to link to long distance wide area networks (WANs)

Bandwidth

difference between the highest and lowest frequencies that can be accommodated on a single channel.

Digital Signal

discrete, binary waveform rather than a continuous waveform. Communicate info as strings of two discrete states: one bits and zero bits, which are represented as on-off electrical pulses

Analog Signal

represented by a continuous waveform that passes through a communications medium and has been used for voice communication Ex. phone handset, speaker in computer, ipod headphone

Wide Area Networks (WANs)

span broad geographical distances - entire regions, states, continents, or the entire globe -most universal and most powerful ex is the internet

Peer-to-Peer

treats all processors equally and is used primarily in small networks with 10 or fewer networks