Exam 5: Telecommunications, Wireless Technologies, and Computer Networks

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Establishing a communication link between two digital devices requires that they "speak the same language" using ____.

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B

Waves sent at the high end of the radio spectrum, between 1 and 300 GHz, are called ____________________.

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microwaves

Identify the letter of the choice that best matches the phrase or definition. -Have your friends hear music or sound clips when they call you rather than the usual ringtone

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K

Identify the letter of the choice that best matches the phrase or definition. -Send messages to friends on AIM, ICQ, MSN Messenger, or Yahoo! Messenger

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Identify the letter of the choice that best matches the phrase or definition. -Connect using a walkie-talkie style interface

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Data communications, a specialized subset of telecommunications, refers to the electronic transmission and reception of digital data, typically between computer systems. _________________________

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A(n) ____ device is installed at the sending computer to alter outgoing communications according to an encoding scheme that makes the communications unintelligible during transport.

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Identify the letter of the choice that best matches the phrase or definition. -Schedule news to be delivered, such as news, sports scores, and so on

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A(n) radio wave is an electromagnetic wave transmitted through an antenna at different frequencies. _________________________

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A(n) ____________________ medium is anything that carries a signal between a sender and receiver.

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Identify the letter of the choice that best matches the phrase or definition. -Have live operators answer your questions

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Microwave transmission is also called orbital microwave.

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A(n) ____ is an agreed-upon way of doing something within an industry.

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With fiber-optic cable, high-intensity light beams are generated by lasers and are conducted along transparent fibers which have a thin coating called ____________________.

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Identify the letter of the choice that best matches the phrase or definition. -Use carrier's e-mail service or your own corporate server

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Most cell phone carriers provide a choice of a "pay-as-you-go" plan without a contract, or a ____ subscription plan with a contract.

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A ____ connects multiple network segments; it listens to each segment and repeats the signal heard on one segment onto every other connected segment.

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A DSL modem is similar to a cable modem and provides high-speed Internet service over ____.

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A(n) ____ uses the protocols of the Internet and the Web within the confines of a private network.

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A ____ is a small electronic box that is used as a central point for connecting a series of computers.

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