Q. Transmission media are usually categorized as _______.

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Q. Transmission media lie below the _______ layer.

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Q. _______ cable consists of an inner copper core and a second conducting outer sheath.

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Q. In fiber optics, the signal is _______ waves.

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Q. Which of the following primarily uses guided media?

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Q. Which of the following is not a guided medium?

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Q. What is the major factor that makes coaxial cable less susceptible to noise than twisted-pair cable?

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Q. In an optical fiber, the inner core is _______ the cladding.

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Q. The inner core of an optical fiber is _______ in composition.

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Q. When a beam of light travels through media of two different densities, if the angle of incidence is greater than the critical angle, _______ occurs.

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Q. When the angle of incidence is _______ the critical angle, the light beam bends along the interface.

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Q. Signals with a frequency below 2 MHz use _______ propagation.

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Q. Signals with a frequency between 2 MHz and 30 MHz use ______ propagation.

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Q. Signals with a frequency above 30 MHz use _______propagation.

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Q. A parabolic dish antenna is a(n) _______ antenna.

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Q. A(n) _____ medium provides a physical conduit from one device to another.

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Q. ________ cable consists of two insulated copper wires twisted together.

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Q. _______ cable is used for voice and data communications.

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Q. __________ consists of a central conductor and a shield.

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Q. _____ cable can carry signals of higher frequency ranges than _____ cable.

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