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QUESTION 124
Which type of classification mechanism does the Cisco IP phone use?
A. ISL
B. Q.931
C. G.729a
D. 802.1p/Q
E. Spanning Tree
Correct Answer: D Section: (none) Explanation
Explanation/Reference: Explanation:
Streaming video applications, such as IPTV video on demand (VoD) programs, are relatively high bandwidth applications with a high tolerance for loss, delay, and delay variation. As such, significant QoS tools are not required to meet the needs of these applications. However, in most enterprise environments, these types of applications are considered more important than regular background applications (such as e-mail and web browsing) and should be given preferential treatment. A Layer 2 classification of CoS 1 in 8021.Q/802.1p environments should be used for these applications.