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Cisco Voice Over IP Sample Questions:

1. Refer to the exhibit. Will these delays meet the G.114 recommendation for one-way delay?

A) Yes, they will meet the recommendation for most user applications.
B) No, they will not meet the recommendation for general network purposes.
C) No, but they will be acceptable for time-sensitive transaction processing.
D) Yes, they will meet the recommendation, provided the administrators understand the implications.

2. The following are the original dial peer configurations for routers R1 and R2:
R1: dial-peer voice 20 voip destination-pattern 408....... session target ipv4:192.168.2.254 !
R2: dial-peer voice 21 pots destination-pattern 4085554321 port 1/0/1 !
Which phones can call to the other?

A) Only Phone A can call Phone B.
B) Both phones can call each other.
C) Neither phone can call the other.
D) Only Phone B can call Phone A.

3. In the VoIP network above, which protocol provides the necessary sequence numbers so voice packets originating at R1 are played in the correct order at R5?

A) CRTP
B) RTP
C) UDP
D) RTCP
E) TCP

4. Refer to the exhibit. What is the minimum WAN bandwidth required to support three simultaneous VoIP calls in this network?

A) 19,200 bps
B) 51,600 bps
C) 79,200 bps
D) 247,200 bps

5. LAB

Examine the following PBX system parameters:
The calling side seizes the line by going off-hook on its E-lead and sends information as DTMF digits.
The voice path is 4-wires, and the voice enabled router is in another building from the PBX.
Select the correct set of commands to allow communication between a voice enabled router and a PBX.

A) voice port 1/0/0 signal immediate-start operation 4-wire type 4
B) voice-port 1/0/0 signal delay-dial operation 4-wire type 1
C) voice port 1/0/0 signal immediate-start operation 4-wire type 2
D) voice port 1/0/0 signal wink-start operation 4-wire type 3

Solutions: