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Networking Multiple Choice Questions and Answers

121. In an optical fiber the inner core is ______ the cladding.
(A)more dense than.
(B)the same density as.
(C)less than dense.
(D)another name for.

122. The inner core of an optical fiber is _____ in composition.
(A)glass or plastic.
(B)bimetallic.
(C)copper.
(D)liquid.

123. Radio communication frequencies range from ____________
(A)3 KHz to 300 KHz.
(B)3 KHz to 300 GHz.
(C)300 KHz to 3 GHz.
(D)3 KHz to 3000 GHz.

124. The radio communication spectrum is divided into bands based on ___________
(A)amplitude.
(B)cost and hardware.
(C)frequency.
(D)transmission media.

125. When a beam of light travels through media of two different densities, if the angle of incidence is greater than the critical angle, ______ occurs.
(A)reflection.
(B)refraction.
(C)incidence.
(D)criticism.