NSE7 Advanced Networking and SD-WAN Practice Question
An administrator needs to apply different routing policies for traffic based on source IP address, overriding the normal routing table. Which feature should be configured?
⚠ Common exam trap
Candidates often confuse route maps (a policy tool) with policy-based routing (the feature that uses route maps to override forwarding), leading them to select 'Route map' instead of 'Policy-based routing' as the feature name.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Policy-based routing
Policy-based routing (PBR) is the correct feature because it allows an administrator to override the normal routing table lookup based on criteria such as source IP address. Unlike static or dynamic routing, PBR uses route maps to match traffic (e.g., source IP) and apply a specific next-hop or interface, enabling granular traffic steering independent of the destination-based routing table.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Prefix list
Why it's wrong here
Prefix lists match routes, not traffic.
- ✗
SD-WAN rule
Why it's wrong here
SD-WAN rules are for SD-WAN policy, but general PBR is broader.
- ✗
Route map
Why it's wrong here
Route maps are used with routing protocols, not for policy routing of traffic.
- ✓
Policy-based routing
Why this is correct
PBR enables routing based on policies.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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