920-804 Technology Standards and Protocol for Converged Networks Practice Tests

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920-804 Technology Standards and Protocol for Converged Networks

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Demo Question 4.

EliteCertify.com has recently implemented a new VoIP network. Given the following network information: 1. The LAN employs the G. 711 CODEC. 2. The LAN connects to the WAN via the local Telco on T1/E1 ATM WAN links. 3. The G. 729(a) CODEC is used for WAN calls. 4. Standard QoS techniques have been employed. VoIPtest calls have consistently had regular voice drop outs. Testing has detected packet loss at regularly scheduled intervals on the WAN links. What is the possible cause and resolution?

A. One or more devices in customer's network are running in Pleisiochronous mode and should be changed to Mesochronous mode.
B. One or more devices in customer's network are running in Mesochronous mode and should be changed to Plesiochronous mode.
C. Links to Telco are experiencing network congestion. The G. 723.1 CODEC should be employed to reduce WAN bandwidth requirements.
D. The LAN is experiencing network congestion. The Gl.729.(a) CODEC should be employed on the LAN to help reduce overall bandwidth requirements.

Display Answer

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Answer: A

Explanation: