By default, how does the PFE manage unicast traffic destined for an existing forwarding table entry?
Options:
A.
It sends the traffic through multiple ports toward its destination.
B.
It sends the traffic through one port toward its destination.
C.
It sends the traffic through the f xpl interface to the RE.
D.
It sends all traffic to the control plane for further processing.
Answer:
B
Explanation:
Explanation:
In a Juniper Networks device, the Packet Forwarding Engine (PFE) processes unicast traffic by forwarding it according to the existing entries in the forwarding table. When the PFE encounters unicast traffic destined for an address that has a corresponding entry in the forwarding table, it directs the traffic through a specific outgoing interface or port toward its destination. This process is based on the most efficient path determined by the routing protocols in use, ensuring that the packet reaches its intended destination through a singular path, unless specific configurations such as load balancing are in place.
Question 29
Which two functions are performed by the PFE? (Choose two.)
Options:
A.
It implements firewall filters.
B.
It selects active routes.
C.
It forwards transit traffic.
D.
It maintains the routing table.
Answer:
A, C
Explanation:
Explanation:
The Packet Forwarding Engine (PFE) in Junos OS performs several key functions, including implementing firewall filters (A) and forwarding transit traffic (C). The PFE applies firewall filter rules to incoming and outgoing traffic and is responsible for the high-speed forwarding of packets based on the information in the forwarding table.
