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Cisco Voice Over IP Sample Questions:

1. In North America, which E&M signaling type is used most often for geographically separated equipment?

A) Type V
B) Type IV
C) Type III
D) Type I
E) Type II

2. In the connection between a Cisco router and an E&M port on a PBX, which side is generally the Cisco side?

A) switch port
B) signaling unit
C) trunk circuit
D) loop start

3. How do a-law and mu-law handle issues with signal-to-noise ratios related to the measure of amplitude?

A) Increase code points at higher frequencies.
B) Use smaller step functions at higher frequencies.
C) Increase code points at lower amplitudes.
D) Use smaller step functions at lower amplitudes.

4. You have a pair of voice enabled routers capable of supporting only medium complexity codecs. You need to conserve bandwidth on WAN links without major impact to call quality. Which two codecs will satisfy these requirements? (Choose two.)

A) G.729
B) G.729a
C) G.729ab
D) G.729b

5. Which three are supervisory signals? (Choose three.)

A) ring
B) busy
C) call waiting
D) off hook
E) on hook

Solutions: