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Cisco Voice Over IP Sample Questions:

1. What are the three components in an MGCP environment? (Choose three.)

A) gatekeeper
B) proxy server
C) endpoint
D) gateway
E) call agent

2. Which command parameter specifies that the router should not attempt to initiate a trunk connection but should wait for an incoming call before establishing the trunk?

A) codec clear-channel
B) connection-trunk 404555 answer-mode
C) voice-port 1/0:1
D) ds0-group timeslots 1-23 type ext-sig

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

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

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) 79,200 bps
C) 51,600 bps
D) 247,200 bps

5. You are meeting with a customer that has deployed IP telephony at their headquarters
location. They would like to roll out IP telephony to their regional office as well. They are now using the G.711 codec at headquarters. They want to be able to maximize the number of calls carried without impacting voice quality or forcing a WAN upgrade. Which codec would be appropriate for their WAN?

A) G.723.1
B) G.711
C) G.729B
D) G.726

Solutions: