mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Examine this OSPF configuration snippet on router…
Examine this OSPF configuration snippet on router R3:
router ospf 1 network 10.1.1.0 0.0.0.255 area 0
default-information originate always
What is the effect of the default-information originate always command?
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
✓
R3 will unconditionally advertise a default route into OSPF as an external LSA type 5.
The command injects a default route (0.0.0.0/0) into the OSPF domain as an external LSA type 5, regardless of whether the router has a default route in its routing table. The 'always' keyword forces advertisement even without a default route.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
R3 will advertise a default route into OSPF only if it has a default route in its routing table.
Why it's wrong here
Incorrect. The 'always' keyword overrides that condition.
- ✓
R3 will unconditionally advertise a default route into OSPF as an external LSA type 5.
Why this is correct
Correct. The 'always' keyword forces advertisement regardless of the presence of a default route.
- ✗
R3 will advertise a default route only if it is an ASBR.
Why it's wrong here
Incorrect. The command itself makes R3 an ASBR, but the 'always' keyword is independent.
- ✗
The command is invalid because default-information originate requires a route-map.
Why it's wrong here
Incorrect. The command is valid without a route-map.
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
Learn chapter
Introduction to ENARSI Exam and Network Fundamentals
Key term
OSPF Default Route Advertisement
OSPF Default Route Advertisement is the process by which a router using the OSPF routing protocol tells other routers to send all traffic for unknown destinations to it, acting as a gateway of last resort.
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.