Cable systems avoid problems of signal interference and spectrum crowding by sending signals through the artificial, enclosed environment of coaxial cable or fiber-based cable.
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Q14: Signals on interactive media must be routed
Q15: The Internet network resembles a
A)satellite distribution system.
B)television
Q16: This pioneering software program, introduced in 1993,
Q17: In fiber-optic cable, hair-thin strands of extremely
Q18: One disadvantage of fiber-optic cables is their
Q20: Satellites link one specific location with only
Q21: Communication satellites need five essential groups of
Q22: Each satellite needs two groups of frequencies,
Q23: Today, switching on the Internet superhighway is
Q24: The Internet began in the late 1960s
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