Which three statements are true about the PFE?

The PFE, or Packet Forwarding Engine, plays a crucial role in the functional architecture of Juniper Networks devices. It is primarily responsible for handling the traffic that flows through the router, making it an essential component of the forwarding plane.

The statement indicating that the PFE is the central processing component of the forwarding plane is accurate because the PFE directly influences how packets are processed and forwarded based on the policies and configurations set by the control plane. This differentiates its role from that of the control plane, which is primarily involved in managing the overall system operation, routing protocols, and decision-making processes needed to direct traffic appropriately.

Furthermore, the PFE’s use of Layer 2 and Layer 3 forwarding tables to manage traffic is a vital aspect of its function, allowing it to implement decisions made by the control plane efficiently. This capability enables it to forward packets at high speeds by utilizing pre-computed forwarding paths.

Additionally, the assertion that the PFE implements services such as policing and class of service reflects its responsibilities in managing network traffic performance and flow control, ensuring that various types of traffic are treated appropriately based on defined service levels.

All these functions emphasize the critical role of the PFE in maintaining efficient data forwarding mechanisms within a network device