mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to troubleshoot OSPF…
A network engineer runs the following command to troubleshoot OSPF route filtering:
R1# show ip ospf database router 2.2.2.2
OSPF Router with ID (1.1.1.1) (Process ID 1)
Router Link States (Area 0)
LS age: 300 Options: (No TOS-capability, DC) LS Type: Router Links Link State ID: 2.2.2.2 Advertising Router: 2.2.2.2 LS Seq Number: 80000004 Checksum: 0x1234 Length: 48 Number of Links: 2
Link connected to: a Stub Network (Link ID) Network/subnet number: 10.1.1.0 (Link Data) Network Mask: 255.255.255.0 Number of TOS metrics: 0 TOS 0 Metrics: 10
Link connected to: a Transit Network (Link ID) Designated Router address: 10.1.1.2 (Link Data) Router Interface address: 10.1.1.1 Number of TOS metrics: 0 TOS 0 Metrics: 10
What does this output indicate?
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
✓
Router 2.2.2.2 is advertising two links, one of which is a stub network 10.1.1.0/24.
The output shows the OSPF router LSA from router 2.2.2.2. It lists two links: one stub network (10.1.1.0/24) and one transit network (via DR 10.1.1.2). This is normal OSPF operation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Router 2.2.2.2 is advertising two links, one of which is a stub network 10.1.1.0/24.
Why this is correct
The LSA shows two links: a stub network and a transit network. The stub network is 10.1.1.0/24.
- ✗
Router 2.2.2.2 is filtering routes from area 0.
Why it's wrong here
The output shows normal LSA advertisement, not filtering.
- ✗
Router 2.2.2.2 is a DR for the transit network.
Why it's wrong here
The DR address is 10.1.1.2, but this does not indicate that 2.2.2.2 is the DR; it shows the DR's address.
- ✗
Router 2.2.2.2 has a mismatched area ID.
Why it's wrong here
The LSA is in area 0, and there is no indication of a mismatch.
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.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 300-410 question from scratch — 1,966 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.