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True or False
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1
The television cable system is the largest and most complex electronic communication system in the world.
A)True
B)False
2
Today, the telephone system is primarily used for voice and employs mostly digital techniques in signal transmission and in control operations.
A)True
B)False
3
A switch hook is a double-pole mechanical switch that is usually controlled by a mechanism actuated by the telephone handset.
A)True
B)False
4
In most modern phones, the tone dialing system used is known as the monotone single frequency system.
A)True
B)False
5
The hybrid circuit is a special transformer used to convert signals from the four wires from the transmitter and receiver to a signal suitable for a single two-line pair.
A)True
B)False
6
When long runs of telephone cable are used, special loading coils are inserted into the line to compensate for large amounts of roll-off at higher frequencies.
A)True
B)False
7
A varistor is a linear resistance element whose resistance does not change regardless of how much current passes through it.
A)True
B)False
8
The telephone dial tone is a continuous mix of 350 and 440 Hz at −13dB.
A)True
B)False
9
Voice mail is a result of the telephone microcontroller automatically answering the call after a preprogrammed number of rings and saving the voice message.
A)True
B)False
10
A small plastic housing that contains all the wiring that connects the line from the telephone company to all the telephone wires in the house is known as the wiring block.
A)True
B)False
11
Paging systems usually operate in the MF and HF ranges.
A)True
B)False
12
The most widely used digital paging format is the FLEX system, developed by Motorola.
A)True
B)False
13
A paging receiver is typically a small battery-powered superheterodyne receiver.
A)True
B)False
14
VoIP is a highly complex digital voice system that relies on high-speed Internet connections from cable TV companies, and other broadband systems.
A)True
B)False
15
A major disadvantage of IP phones is that they cannot use wireless Ethernet connections.
A)True
B)False





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