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Q20 Multiple choice

The enterprise customer ABC Corp will deploy a centralized unified communications application to provide voice, and instant messaging to their branch offices. Some of the branch offices are located in remote locations and are connected via a 1.5 Mb/s Layer 3 VPN connection.

Which two ways are the most cost-effective to ensure that this new application is implemented properly? (Choose two)

Select all that apply.

A
Use a low bitrate codec such as G 711
B
Set voice activity detection to avoid sending packets when the conversations is silent
C
Enable VRF-Lite on the CE router to create a separate voice VRF
D
Set LFI on the WAN connections to interleave the small voice packets with the large data packets
E
Set WAN optimization on the CE router to compress the voice packets for improved bandwidth utilization and performance
F
Use a low bitrate codec such as G 729

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