问题:
A . QoS pre-classify permits making QoS decisions based on elements from the unencrypted IP packet.
B . QoS pre-classify is required when encrypting voice.
C . QoS pre-classify is an advantage to Service Providers transporting encrypted packets.
D . QoS pre-classify is not designed for IPSec/GRE configurations.
● 参考解析
本题暂无解析
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