Exam 6: Signaling and Switching

The 1ESS was the first electronic telephone switch.

A method of modulation in which an information wave is applied to a carrier wave to modify the carrier wave's phase is known as:

Does the term disconnect indicate that a subscriber's telephone is on-hook and the circuit is available for connection?

Which of the following uses the same communications channel as the information being exchanged?

Which of the following is a heavily trafficked connection between a carrier's POPs?

____________________ is a narrow band of unused frequency that separates two information-carrying bands and ensures that signals do not interfere with each other.

Does the term band refer to a subchannel within a communications channel?

Circuit switching refers to a method of switching in which a connection is established between two nodes before they begin transmitting data.

Which of the following separates signals combined by multiplexing and regenerates them in their original form at the receiving end?

Which of the following is a method of sending multiple analog signals simultaneously over one channel by separating the channel into subchannels?

Which of the following describes the relationship between a wave's cycle and time?

Amplitude shift keying is a method of modulation in which the amplitude of the carrier signal is modified by the imposition of the information signal.

A demodulator is a device that can encode and decode a signal.

The wave that represents the signal to be transmitted is known as:

Does the term carrier wave refer to the wave whose characteristics are modified by the addition of an information wave?

Which of the following is a part of a local switch's central control computer that monitors the status of hundred of SLICs?

A busy circuit is a tone of two combined frequencies that lasts for .5 seconds and repeats after .5 seconds of silence.

Does the term packet refer to the relationship between a wave's cycle and time?

Does the term off-hook refer to the condition of the line when a telephone handset is resting on its hook?

Which of the following is a device that imposes an information wave on a carrier wave at the transmission end?