Discuss Cisco 350-801 Exam Topic 9 Question 76

Which codec should an engineer select for a call made between "Dallas-REG' & "Austin-REG'?

AMP4A-LATM

BG.711

COPUS

DG.729

G729

G711
OPUS
MP4A-LATM
The codec preference list for the 'Austin-REG' region is 'Factory Default low loss'. This list includes the following codecs in order of preference:

G729

G711
OPUS
MP4A-LATM
Since both regions have the same codec preference list, the codec that will be used for a call made between 'Dallas-REG' and 'Austin-REG' is G.729.

G729 is a narrowband speech codec that was developed by the ITU-T in 1988. It is a low-bitrate codec that provides good quality speech at a bitrate of 8 kbps. G.729 is widely used in VoIP applications and is the default codec for many VoIP systems.

G711 is a wideband speech codec that was developed by the ITU-T in 1972. It is a high-bitrate codec that provides excellent quality speech at a bitrate of 64 kbps. G.711 is not as widely used as G.729 due to its high bitrate requirements.
OPUS is a lossy audio codec that was developed by the IETF in 2012. It is a low-bitrate codec that provides good quality speech at a bitrate of 6 kbps. OPUS is widely used in VoIP applications and is the default codec for many VoIP systems.
MP4A-LATM is a lossy audio codec that was developed by the IETF in 1999. It is a high-bitrate codec that provides excellent quality speech at a bitrate of 24 kbps. MP4A-LATM is not as widely used as G.729 or OPUS due to its high bitrate requirements.

Suggested Answer: D

The codec preference list for the 'Dallas-REG' region is 'Factory Default low loss'. This list includes the following codecs in order of preference:

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