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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?

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 ACL 10 permits only routes with source IP in the 192.168.0.0/16 range. The route-map OSPF-REDIST matches this ACL and sets the metric type to type-1. Only EIGRP routes that match the ACL (i.e., have a network starting with 192.168.x.x) are redistributed into OSPF as type-1 external routes. Routes not matching the ACL are denied because the route-map has only one permit sequence and the ACL ends with deny any.

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

    Incorrect. The ACL filters only 192.168.0.0/16; other routes are denied.

  • Only EIGRP routes in the 192.168.0.0/16 range are redistributed into OSPF as type-1 external routes.

    Why this is correct

    Correct. The ACL permits 192.168.0.0/16; the route-map sets metric-type type-1 for matching 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

    Incorrect. The set metric-type command is applied when the route-map is used; it overrides the default type-2.

  • 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

    Incorrect. ACLs can be used in route-maps; the deny any at the end is standard and works as expected.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

Quick reference

Routing Protocol Comparison

ProtocolMetricMax HopsAlgorithmType
RIP v2Hop count15Bellman-FordDistance vector
OSPFCost (bandwidth)UnlimitedDijkstra (SPF)Link state
EIGRPComposite metricUnlimitedDUALHybrid
IS-ISCostUnlimitedDijkstraLink state
BGPPolicy / attributesUnlimitedPath vectorPath 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 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.