Chapter 7 - Telecommunications, Internet, and Wireless Technology

Key Terms

Network
Two or more connected computers.
Hubs
Simple devices that connect network components.
Switch
Can filter and forward data to a specified destination on a LAN
Router
connect two or more networks
Packet Switching
A method of slicing digital messages into parcels called packets, sending them along different communication paths and then reassembling the packets once they arrive at their destinations.
Protocol
a set of rules and procedures governing transmission of information between two points in a network.
TCP/IP
Transmission Control Protocol/Internet Protocol - Was developed duing the 1970's to support US Dept. of Defense Advanced Research Projects Agency (DARPA) to help scientists transmit data among different types of computers.
Modem
Device that translates digital signals into analog form. (modulation/demodulation)
LAN
Local Area Network - Up to 500 meters; an office or floor of building
CAN
Campus Area Network - Up to 1,000 meters ( a mile); college campus/corporate facility
MAN
Metropolitan Area Network - City or metro area
WAN
Wide Area Network - Transcontinental or global
P2P
Peer to Peer - Treats all processors equally, various computers exchange data by direct access and can share peripheral devices.
Topology
The way that LANs are connected together, ex. star, bus, or ring
Internet Protocol (IP) Address
32 bit number represented by four strings of numbers 0-255 seperated by periods.
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