JNCIE-DC: Juniper Networks Certified Expert – Data Center (2021) — Question 2

You are implementing Routing Engine protection, and packets are processed in a specific order.
In this scenario, which function processed a received packet last?

Answer options

• A. loopback interface input policer
• B. loopback interface input firewall filter
• C. physical interface input firewall filters
• D. physical interface input policer

Correct answer: D

Explanation

The physical interface input policer is processed last because it is designed to manage the rate of incoming packets after all other filters have been applied. The other options, including firewall filters and policers on loopback interfaces and physical interfaces, are processed earlier in the packet handling sequence.