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300-410 Practice Question: Which TWO statements correctly describe the…
Which TWO statements correctly describe the behavior of EIGRP stub routing and its impact on troubleshooting? (Choose TWO.)
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
✓
A stub router configured with the 'leak-map' option can advertise specific routes learned from other EIGRP neighbors beyond the stub restrictions.
EIGRP stub routing restricts the types of queries sent to a stub router and prevents it from acting as a transit router. Leak-map allows selective leaking of routes. The stub router does not send queries to its neighbors, but it can still receive queries from them. 'show ip eigrp topology' shows all routes, not just stub-learned ones. The 'connected' keyword only advertises connected routes, not summary or static unless specified.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A stub router configured with the 'leak-map' option can advertise specific routes learned from other EIGRP neighbors beyond the stub restrictions.
Why this is correct
The leak-map feature allows a stub router to selectively advertise routes that would otherwise be blocked by the stub restriction, enabling controlled transit of certain routes.
- ✗
When a router is configured as an EIGRP stub with the 'connected' keyword, it automatically advertises all connected interfaces, including passive interfaces, to its neighbors.
Why it's wrong here
The 'connected' keyword only advertises connected routes that are part of the EIGRP process; passive interfaces are still advertised if they are in the EIGRP network statement, but the stub does not automatically include all connected interfaces unless they are explicitly in the EIGRP configuration.
- ✓
If a stub router receives a query from its neighbor, it will reply with an 'infinite metric' (unreachable) for all routes that are not in its routing table, including those learned via redistribution.
Why this is correct
A stub router cannot forward queries to other neighbors; it replies immediately with an unreachable metric for any route it does not have, including redistributed routes, to prevent query propagation.
- ✗
The command 'show ip eigrp topology all-links' on a stub router displays only the routes that are in the routing table, as stub routers do not store feasible successors.
Why it's wrong here
The 'all-links' option displays all EIGRP-learned routes, including feasible successors, regardless of stub status. Stub routers can still store feasible successors if they have multiple paths.
- ✗
An EIGRP stub router configured with the 'static' keyword will automatically redistribute all static routes into EIGRP, even if the 'redistribute static' command is not present.
Why it's wrong here
The 'static' keyword only allows the stub router to advertise static routes that are explicitly redistributed using the 'redistribute static' command under the EIGRP process; it does not enable automatic redistribution.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.