Coaxial cable has one central wire surrounded by insulation,a metallic shield,and a final case of insulating material.
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Q83: A _ has a transmitter and a
Q84: A virtual private network establishes a dedicated
Q85: Infrared communications can penetrate walls,buildings,and other structures.
Q86: A repeater is a device that receives
Q87: A _ consists of two or more
Q89: The most common type of network interface
Q90: Infrared is a wireless communications medium that
Q91: A padlock icon on a Web site
Q92: You cannot talk on the telephone and
Q93: Wireless communications media transmits information over a
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