Information Technology Reference
In-Depth Information
8.
How large is each T1 frame sent over a digital CAS connection?
a.
8 bits
b.
24 bits
c.
80 bits
d.
193 bits
9.
Which of the following time slots are used for T1 and E1 signaling when using CCS
connections? (Choose two.)
a.
Time slot 1
b.
Time slot 16
c.
Time slot 17
d.
Time slot 23
e.
Time slot 24
10.
Which of the following standards created by the ITU designates international num-
bering plans for devices connected to the PSTN?
a.
ITU-T
b.
E.164
c.
ITU-161
d.
T-161
11.
What frequency range is accurately reproduced by the Nyquist theorem?
a.
200-9000 Hz
b.
300-3400 Hz
c.
300-4000 Hz
d.
20-20,000 Hz
12.
What amount of bandwidth is consumed by the audio payload of G.729a?
a.
4.3 kbps
b.
6.3 kbps
c.
8 kbps
d.
16 kbps
13.
Which of the following are high-complexity codecs? (Choose two.)
a.
G.711 μ-law
b.
G.729
c.
G.729a
d.
iLBC
