单选题Which statement describes exception traffic?（）AException traffic must be sent to the PFE for processing.BException traffic enters one ingress port and is sent out multiple egress ports.CException traffic is rate-limited on the internal link to prevent DoS attacks.DException traffic is processed after forwarding traffic when congestion exists.
单选题
Which statement describes exception traffic?（）
A
Exception traffic must be sent to the PFE for processing.
B
Exception traffic enters one ingress port and is sent out multiple egress ports.
C
Exception traffic is rate-limited on the internal link to prevent DoS attacks.
D
Exception traffic is processed after forwarding traffic when congestion exists.
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