mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show ip ospf database
OSPF Router with ID (10.1.1.1) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
10.1.1.1 10.1.1.1 100 0x80000001 0x00A0B0 1 10.2.2.2 10.2.2.2 200 0x80000003 0x00C0D0 2
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.1.1.2 10.1.1.2 150 0x80000001 0x00E0F0
R1# show ip route ospf
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O 10.2.2.0/24 [110/20] via 10.1.1.2, 00:10:00, FastEthernet0/0Based on this output, what is a likely issue?
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 route-map is filtering OSPF routes, causing only one route to be installed.
The OSPF database shows two routers and a net link, but only one OSPF route is in the routing table. This could be due to a route-map filtering OSPF routes. The correct answer is that a route-map may be filtering some OSPF routes from being installed.
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 route-map is filtering OSPF routes, causing only one route to be installed.
Why this is correct
The database has more routes than the routing table, indicating filtering.
- ✗
OSPF is not running on any interface.
Why it's wrong here
The database shows OSPF is running.
- ✗
The router ID is misconfigured.
Why it's wrong here
Router ID 10.1.1.1 is valid.
- ✗
The area is not configured correctly.
Why it's wrong here
Area 0 is standard.
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 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.