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QUESTION 1
A user is complaining that during calls the remote caller’s voice intermittently cannot be heard.
Which of the following is the MOST likely cause?

A. Network to Public Switched Telephone Network (PSTN) impedance is mismatched
B. Network packet drops on the receivers side of the conversation
C. Network jitter is above acceptable limits on the round trip path
D. Network packet drops on the transmitting side of the conversation

Answer: B


QUESTION 2
Which of the following BEST describes a network bottleneck?

A. A router with multiple WAN links.
B. A switch that is underutilized.
C. A network with multiple switches.
D. A router that is receiving more information than it can process.

Answer: D


QUESTION 3
Which of the following is true about jitter?

A. Jitter is caused by insufficient network capacity.
B. Jitter is the variation in time between thearrival of voice packets.
C. Jitter can only be solved by using prioritization techniques.
D. Jitter is caused by endpoints.

Answer: B


QUESTION 4
Which of the following protocols can be used in scripting call flows in an Interactive Voice
Response (IVR)?

A. HTML
B. HTTP
C. XML/VXML
D. TCP/IP

Answer: C


QUESTION 5
Which of the following codecs would a technician configure on the VoIP server to match the voice
quality of a regular Public Switched Telephone Network (PSTN) call on a VoIP phone?

A. G. 729
B. G. 732
C. G. 722
D. G. 711

Answer: D


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