What happens to voice packets from an 8845 Cisco IP Phone at a properly configured QoS trust boundary?

The correct answer is B. The voice packets are classified by the phone and the classification is accepted. At a properly configured QoS trust boundary, the Cisco IP Phone classifies and marks its own voice packets, and the access layer switch trusts and accepts those markings, allowing the packets to receive the appropriate priority treatment throughout the network.

Infrastructure and Quality of Service

Question

Options

AThe phone and access layer switch negotiate the classification of packets.
BThe voice packets are classified by the phone and the classification is accepted.
CCisco UCM determines how the voice packets are classified.
DThe voice packets are not trusted, and the access layer switch reclassifies the packets.

How the community answered

(27 responses)

B
89% (24)
C
7% (2)
D
4% (1)

Explanation

At a properly configured QoS trust boundary, the Cisco IP Phone classifies and marks its own voice packets, and the access layer switch trusts and accepts those markings, allowing the packets to receive the appropriate priority treatment throughout the network.

Topics

#QoS Trust Boundary#Packet Classification#IP Phone#Voice QoS

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