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300-410 Practice Question: The default administrative distance for a route…
What is the default administrative distance for a route installed by Policy-Based Routing (PBR) using the 'set ip next-hop' command?
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
✓
The administrative distance of the routing protocol that learned the route.
PBR does not change the administrative distance of the route; the route is installed with the AD of the routing protocol that learned it. The 'set ip next-hop' command does not modify AD.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
0
Why it's wrong here
AD 0 is used for directly connected routes, not PBR.
- ✗
1
Why it's wrong here
AD 1 is for static routes, not PBR.
- ✓
The administrative distance of the routing protocol that learned the route.
Why this is correct
PBR does not alter the administrative distance; the route retains the AD of the original routing protocol.
- ✗
120
Why it's wrong here
AD 120 is the default for RIP, not for PBR.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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