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Saturday, June 28, 2008

Questions : CCNA Exam Views

____________ is an electrical or magnetic field that is a result of one communications signal that can affect the signal in a nearby circuit.

A. EMI


B. Attenuation


C. Crosstalk


D. Bandwidth

Answer :
C. Crosstalk is an electrical or magnetic field that is a result of one communications signal that can affect the signal in a nearby circuit. Answer A is incorrect because EMI is the interference caused by electromagnetic signals. Answer B is incorrect because attenuation occurs over long distances as a signal loses strength. Answer D is incorrect because bandwidth is the total amount of information that can traverse a communications medium measured in millions of bits per second.

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