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OMIS2000- Chapter Notes

O spread from computer to computer when some action

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Unformatted text preview: verning transmission of information between two points in a network (protocol) • Transmission control protocol/internet protocol – transmit data among different computers over long distances. • TCP – handles the movement of data between computers. (establishes connection, sequences the transfer of packets, and acknowledges the packets sent.) • IP – responsible for the delivery of packets and includes the disassembling and reassembling of packets during transmission. • Application layer – access other layers and defines protocols that applications use to exchange data • Transport layer – providing application layer with communication and packet services. • Internet layer – addressing, routing, packaging data packets called IP datagrams. • Network interface layer – placing packets on and receiving them from the network medium, which could be any networking technology. 7.2 Communications Networks Modulator- demodulator • Cable modems, Connect your computer to the internet using a cable network, DSL modems connect it through telephone company’s land line network, wireless modems connect through phone network or Wi- Fi. OMIS 2000 Final Exam Gahtan • • • 21 Digital signals (binary waveform) – communicate info as strings of two discrete states: one bit and zero bits Analog signal – continuous waveform that passes through a communications medium and used for voice communications. A modem is a device that translates digital signal to analog form so that computers can transmit data over analog networks such as telephone and cable networks. Types of Networks...
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