Information Technology Reference
In-Depth Information
2.
Which of the following issues is prevented by using ground start signaling?
a.
Echo
b.
Glare
c.
Reflexive transmissions
d.
Mirrored communication
3.
Which of the following signaling types represents supervisory signaling?
a.
Off-hook signal
b.
Dial tone
c.
DTMF
d.
Congestion
4.
What are two disadvantages of using analog connectivity?
a.
Conversion complexity
b.
Signal quality
c.
Limited calls per line
d.
Lack of common voice services
5.
Which of the following processes samples an analog waveform at timed intervals to
obtain a digital measurement of the electrical signal?
a.
Quantization
b.
PA M
c.
PCM
d.
Codec
6.
Which of the following systems allows you to send multiple voice calls over a single
digital circuit by dividing the calls into specific time slots?
a.
MUX
b.
DE-MUX
c.
TDM
d.
TCP
7.
When using T1 CAS signaling, which bits are used to transmit signaling information
within each voice channel?
a.
First bit of each frame
b.
Last bit of each frame
c.
Second and third bits of every third frame
d.
Eighth bit of every sixth frame
