试题详情
- 单项选择题 Refer to the exhibit. With an IPSec tunnel established between remote Router A and head-end router B, how can the Service Provider Edge Router identify Voice over IP packets flowing through the IPSec tunnel from a Cisco 7960 IP phone?（）
A、UDP ports 16384 through 32727
B、ESP packets less than 113 byes
C、DiffServ codepoint EF Expedited Forwarding
D、RTP ports 6970 through 6999
- C
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