642-871 Designing Cisco Network Services Architecture
Note 1: 642-871 Exhibit and all related diagrams are not shown in demo questions.
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Note 2: 642-871 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.
Demo Question 5.
What two network design constraints must EliteCertify Mexico consider in order to accommodate voice over IP traffic?(Choose two.)
A. Voice traffic is variable delay insensitive provided a large enough elasticity buffer exists in the voice endpoints .
B. Voice traffic requires the round-trip latency be no more than 300 ms.
C. Voice traffic is insensitive to dropping of voice packets since modern codecs use prediction algorithms capable of rebuilding missing sounds and words.
D. Since voice calls configured for modern codecs use such a small amount of bandwidth (12kbps) per call, it is generally not a requirement to guarantee bandwidth for voice traffic.
E. Link fragmentation and interleaving techniques should be applied on all WAN interfaces with bandwidth less than 768kbps.
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