Match policy routing and routing policies with the tools they use.

Question

Options

• AThe correct mappings are: 'Policy Routing' maps to 'Traffice-Filter', 'Traffic-Policy', and 'Policy-Based-Route'. 'Routing strategy' maps to 'Route-Policy' and 'Filter-Policy'.
• B
• C
• D

• A
  83% (33)
• B
  5% (2)
• C
  10% (4)
• D
  3% (1)

Explanation

Option A correctly distinguishes two concepts that are often confused: policy routing and routing strategy (routing policy). Policy routing operates on data-plane traffic - it classifies and forwards packets based on defined rules - which is why it uses Traffic-Filter (to match traffic), Traffic-Policy (to apply forwarding actions), and Policy-Based-Route (to redirect packets away from normal destination-based routing). Routing strategy, by contrast, operates on the control plane, controlling which routes are imported, exported, or advertised between routing protocols - making Route-Policy (to match and modify route attributes) and Filter-Policy (to filter routing updates) its appropriate tools. Options B, C, and D are blank and therefore provide no valid answer.

Memory tip: Separate the planes. Policy routing touches packets in motion (data plane), so its tools act on traffic - think "filter traffic, police traffic, route by policy." Routing strategy touches routing tables and protocol updates (control plane), so its tools act on routes - think "route policy filters routes, filter policy filters protocol advertisements."

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