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| A network in which the computers are physically close to each other, usually in the same building. |
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| The most common type of LAN cable. It contains copper wires that resemble those in standard telephone cables. |
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| A popular networking architecture developed in the 1970s at Xerox PARC; it has become an industry standard. |
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| A network that uses power lines. |
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| Each node has a tiny radio transmitter so it can send and receive data through the air rather than through cables. |
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| A Network of LANs that extends over a long distance. |
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| A continuous wave, similar to the sound waves that make up our phone conversations. |
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| A connection using a modem and standard phone lines. |
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| An alternative to today's networks that rely on centralized routers. The message hops from wireless device to wireless device until it finds its destination. |
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| Hardware devices or software programs that route messages as they travel between networks. |
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