Which transmission media has the highest transmission speed in a network?

• coaxial cable

• twisted pair cable

• optical fiber

• electrical cable

Which of the following performs modulation and demodulation?

• fiber optics

• switch

• modulator

• modem

In fiber optics, the signal is _______ waves.

• light

• radio

• infrared

• very low frequency

Which of the following is not a guided medium?

• twisted-pair cable

• coaxial cable

• fiber-optic cable

• atmosphere

Transmission media lie below the _______ layer.

• physical

• network

• transport

• application

Twisting in a twisted-pair help reduce the __________.

• length

• cost

• noise

• None of the choices are correct

Transmission media are usually categorized as __________.

• fixed or unfixed

• guided or unguided

• determinate or indeterminate

• metallic or non-metallic

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

• twisted-pair

• coaxial

• fiber-optic

• shielded twisted-pair

Smoke signals are an example of communication through ________

• a guided medium

• an unguided medium

• a refractive medium

• a small or large medium

Which of the following is not a guided medium?

• twisted-pair cable

• coaxial cable

• fiber-optic cable

• atmosphere