JNCIA-Junos: Juniper Networks Certified Associate – Junos (2022) — Question 15

Which statement about the Junos OS forwarding table is correct?

Answer options

• A. The forwarding table is responsible for identifying and selecting active routes.
• B. The forwarding table is only stored on the Routing Engine.
• C. The forwarding table consolidates routes from multiple sources.
• D. The forwarding table is populated with active routes from the routing table.

Correct answer: D

Explanation

The correct answer is D because the forwarding table is specifically built from active routes in the routing table to facilitate packet forwarding. Option A is incorrect as it describes a function of the forwarding table but does not specify how it is populated. Option B is false because the forwarding table can also be maintained on other hardware components, not just the Routing Engine. Option C is misleading as the forwarding table primarily reflects the active routes and does not consolidate from multiple sources in the way described.