300-410 Practice Question: In OSPF, what is the default administrative…

In OSPF, what is the default administrative distance for intra-area routes on a Cisco IOS-XE router?

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

✓

110

Cisco IOS-XE assigns an administrative distance of 110 to all OSPF routes, including intra-area, inter-area, and external routes, unless modified.

Answer analysis

For each option: why learners choose it and why it is or isn't the right answer here.

✗
90
Why it's wrong here
Incorrect. 90 is the default administrative distance for EIGRP, not OSPF.
✓
110
Why this is correct
Correct. OSPF uses a default administrative distance of 110 for all route types.
✗
115
Why it's wrong here
Incorrect. 115 is not a standard default administrative distance for OSPF.
✗
120
Why it's wrong here
Incorrect. 120 is the default administrative distance for RIP, not OSPF.

Visual reference

Quick reference

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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