Data Communication & Networking - True - False - 2

Token passing is a term that refers to hub polling, in which one computer starts a poll and passes it to the next computer on a multipoint circuit.

Answer: True

With contention, a computer does not have to wait before it can transmit. A computer can transmit at anytime.

Answer: False

Contention is commonly used with Ethernet local area networks.

Answer: True

Undesirable stray electrical voltage can cause data communication errors.

Answer: True

Gaussian noise is a special type of attenuation.

Answer: False

Impulse noise is caused by the thermal agitation of electrons.

Answer: False

Crosstalk occurs when the signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.

Answer: True

Attenuation refers to the loss of signal strength.

Answer: True

When the signals from two circuits combine to form a new signal that falls into a frequency band reserved for another signal, this is called, intermodulation noise.

Answer: True


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