A Service That Uses Existing Phone Lines to Provide High-Speed

question 23

Multiple Choice

A service that uses existing phone lines to provide high-speed connections is called _______.

• A) WWAN
• B) 3G/4G
• C) Voiceband
• D) DSL

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Definitions:

Chain Reaction

A series of reactions where a reactive product or by-product causes additional reactions to take place, often leading to a self-sustaining sequence.

Transmutation Reaction

A nuclear reaction in which the nucleus of an atom changes into a nucleus with a different number of protons, thereby changing one element into another.

Alpha Emitter

A type of radioactive decay in which an unstable atom emits an alpha particle consisting of two protons and two neutrons, thereby reducing its atomic number by 2 and mass number by 4.

Nitrogen

A colorless, odorless, tasteless gas that constitutes approximately 78% of the Earth's atmosphere and is a vital part of living organisms' compounds.