Which of the following facts must be considered when designing for IP telephony within an Enterprise Campus network?
A . Because the IP phone is a three-port switch, IP telephony extends the network edge, impacting the Distribution layer.
B . Video and voice are alike in being bursty and bandwidth intensive, and thus impose requirements to be lossless, and have minimized delay and jitter.
C . IP phones have no voice and data VLAN separation, so security policies must be based on upper layer traffic characteristics.
D . Though multi-VLAN access ports are set to dot1q and carry more than two VLANs they are not trunk ports.
Answer: D
Explanation:
The port between the IP phone and the switch is not a 802.1Q trunk even if there are 2 vlans:
voice and data
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