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2.5G networks
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These use upgrades to the existing cellular infrastructure;
used when 3G networks not available.
248
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802.11b
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A Wi-Fi standard with an effective distance of 30 to 50 metres.
250
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Access point
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A box consisting of a radio receiver/transmitter and antennas that link to a wired network, router or hub.
250
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Analog signal
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A continuous waveform that passes through a communications medium and is typically used for voice communication.
228
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Asynchronous Transfer Mode (acro.)
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ATM
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Backbone
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Acts as the primary path for traffic flowing to or from other networks;
part of a network that handles the major traffic.
230
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Asynchronous Transfer Mode
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A networking technology that parcels information into 8-byte cells, allowing data to be transmitted between computers from different vendors at any speed.
233
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Bandwidth
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The difference between the highest and lowest frequencies that can be accommodated on a single channel.
232
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Blog
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Informal, yet structured Web site where subscribing individuals can publish stories, opinions, and links to other Web sites of interest;
popular term for a Weblog.
242
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Bluetooth
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Popular name for the 802.15 wireless setworking standard which is useful for creating small personal area networks;
links up to eight devices within a 10-metre area using lowpower, radio-based communication.
249
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Bus network
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One station transmits signals, which travel in both directions along a single transmission segment; all signals are broadcast in both directions to the entire network; all machines receive the same signals.
230
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Cable Internet connections
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Provided by cable television vendors and use digital cable coaxial lines to deliver high-speed Internet access to homes and businesses.
233
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Campus area network (acr.)
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CAN
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Campus area network
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LANs interconnected within multiple buildings or a geographic area, such as a school campus or military base
228
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CA *net4
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Canadian research network with new protocols and transmission speeds that provides an infrastructure for supporting high-bandwidth Internet applications;
similar to Internet2 in the US.
237
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