The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tables
The PFE implements advanced services such as policing, stateless firewall filtering, and class of service
The PFE sends traffic to the RE for systematic packet forwarding
The PFE receives hardware and environmental status messages from the RE
第1题：
Which statement describes the PFE?（）
第2题：
Which statement is true regarding the forwarding plane?（）
第3题：
A.DLCI 17 describes the ISDN circuit between R2 and R3.
B.DLCI 17 describes a PVC on R2.It cannot be used on R3 or R1.
C.DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.
D.DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.
第4题：
Which statement describes the function of the LNS in a L2TP environment?（）
第5题：
Which statement describes the process ID that is used to run OSPF on a router ?（）
第6题：
If the PFE does not have a route to the destination address of a packet， which action will be taken？（）
第7题：
Ⅲ. There are four choices following each statement. Mark the choice that can best complete the statement: If a linguistic study describes and analyzes the language people actually use, it is said to be （）
第8题：
Which statement describes VRRP object tracking?（）
第9题：
As an experienced Network Engineer, you are required to implement the security architecture assessment. Which of the following statement describes the most important reason for that?（）
第10题：
Exception traffic must be sent to the PFE for processing.
Exception traffic enters one ingress port and is sent out multiple egress ports.
Exception traffic is rate-limited on the internal link to prevent DoS attacks.
Exception traffic is processed after forwarding traffic when congestion exists.