JNCIA-Junos: Juniper Networks Certified Associate – Junos (2022) — Question 38

Which two statements describe the RE on Junos OS devices? (Choose two.)

Answer options

• A. The RE maintains the routing tables.
• B. The RE provides hardware status messages for the PFE.
• C. The RE forwards traffic based on its local copy of the forwarding table.
• D. The RE is considered the control plane.

Correct answer: A, D

Explanation

The RE, or Routing Engine, is responsible for maintaining the routing tables, making option A correct. Additionally, it is considered the control plane of the device, which validates option D. Options B and C are incorrect because they relate to the Packet Forwarding Engine (PFE) and the data plane, not the functions of the RE.