单选题Which statement describes the PFE?（）A The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tablesB The PFE implements advanced services such as policing, stateless firewall filtering, and class of serviceC The PFE sends traffic to the RE
题目
单选题
Which statement describes the PFE?（）
A
The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tables
B
The PFE implements advanced services such as policing, stateless firewall filtering, and class of service
C
The PFE sends traffic to the RE for systematic packet forwarding
D
The PFE receives hardware and environmental status messages from the RE