mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Configures the following on a router: ``` router…
A network engineer configures the following on a router: ```
router eigrp 100
distance 150 10.0.0.0 0.255.255.255 ``` What is the intended effect?
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
✓
It sets the administrative distance to 150 for routes learned from any neighbor whose source IP matches the wildcard mask 0.255.255.255.
The `distance` command with an access-list qualifier sets AD for routes matching the ACL. Here, routes from the 10.0.0.0/8 range will have AD 150.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It sets the administrative distance for all EIGRP routes to 150.
Why it's wrong here
The ACL qualifier limits the scope.
- ✓
It sets the administrative distance to 150 for routes learned from any neighbor whose source IP matches the wildcard mask 0.255.255.255.
Why this is correct
The ACL is applied to the source IP of the route.
- ✗
It sets the administrative distance to 150 for all routes in the routing table with destination 10.0.0.0/8.
Why it's wrong here
The ACL matches the source IP of the route, not the destination.
- ✗
It sets the administrative distance to 150 for EIGRP external routes only.
Why it's wrong here
No such distinction is made.
Visual reference
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.