Which feature can be used to optimize the traffic path for a specific application?
- RSTP
- PBR
- uRPF
- OSPF
Explanation: Policy-based routing (PBR) is a feature that allows you to selectively route traffic based on specific criteria or policies instead of relying solely on traditional destination-based routing protocols. It provides a flexible tool for network administrators to implement user-defined policies that direct packets to take different paths across an internetwork.
By using route maps to match incoming packets, PBR can override the default routing table to forward traffic based on factors like the source IP address. This is particularly useful in complex environments where specific traffic paths must be chosen due to legal, contractual, or political constraints, or simply to optimize the path based on network needs. In contrast, protocols like OSPF focus on traditional destination-based path selection, while RSTP is used for Layer 2 loop prevention.
Related exam: Modules 1 – 7: Checkpoint Exam: Network Switching Answers (CCNP ENCOR v9)
