Transmission Media

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

• coaxial cable

• twisted pair cable

• optical fiber

• electrical cable

Bits can be send over guided and unguided media as analog signal by

• digital modulation

• amplitude modulation

• frequency modulation

• phase modulation

Which data communication method is used to transmit the data over a serial communication link?

• Simplex

• Half-duplex

• Full duplex

• All of above

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

In electromagnetic spectrum for wireless communication, reserved range for Radio waves and microwaves is known as

• ground propagation

• sky propagation

• line-of-sight propagation

• None

Radio waves, micro- waves and infrared waves are types of

• wireless transmission

• guided transmission

• both a and b

• None