mediumMultiple Choice
300-410 Practice Question: Examine the following configuration on R3: !---…
Examine the following configuration on R3:
!--- R3 configuration
access-list 10 permit 192.168.0.0 0.0.255.255 access-list 10 deny any
! route-map OSPF-REDIST permit 10 match ip address 10 set metric-type type-1 !
router ospf 1
redistribute eigrp 100 subnets route-map OSPF-REDIST !
What is the effect of this configuration?
⚠ Common exam trap
300-410 often tests the assumption that an ACL with 'deny any' at the end invalidates the route-map, but it is standard and only affects unmatched routes.
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
✓
Only EIGRP routes in the 192.168.0.0/16 range are redistributed into OSPF as type-1 external routes.
The route-map OSPF-REDIST uses ACL 10 to match routes. ACL 10 permits 192.168.0.0/16 (with wildcard 0.0.255.255) and denies all else. The route-map then sets metric-type type-1 for matched routes. Therefore, only EIGRP routes within 192.168.0.0/16 are redistributed into OSPF as type-1 external routes. The implicit deny at the end of the ACL means other routes are not redistributed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
All EIGRP routes are redistributed into OSPF as type-1 external routes.
Why it's wrong here
The route-map matches ACL 10, which permits only 192.168.0.0/16, so redistribution is limited to those prefixes; everything else is filtered. It is tempting because the redistribute command names the whole EIGRP process, and would be correct if the route-map had no match clause.
- ✓
Only EIGRP routes in the 192.168.0.0/16 range are redistributed into OSPF as type-1 external routes.
Why this is correct
Access list 10 permits 192.168.0.0/16 and denies everything else, and the route map applies it to redistribution, so only matching EIGRP routes enter OSPF. The set metric-type type-1 clause marks them as E1 external routes.
- ✗
EIGRP routes in 192.168.0.0/16 are redistributed as type-2 by default; the set metric-type is ignored.
Why it's wrong here
The set metric-type type-1 command is honoured, so matched routes enter OSPF as E1; type-2 is only the default when no metric-type is set. It is tempting because E2 is OSPF's default external type, and would be correct if the route-map omitted the set metric-type clause.
- ✗
The configuration is invalid because the route-map uses an ACL that ends with deny any; a prefix-list must be used instead.
Why it's wrong here
An ACL ending in deny any is valid inside a route-map match; it simply means non-matching prefixes fail the match and are not redistributed. It is tempting because implicit deny feels fatal, and would be correct if route-maps rejected ACLs with deny statements, which they do not.
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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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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.