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300-410 Practice Question: Which TWO statements about administrative…
Which TWO statements about administrative distance are true? (Choose TWO.)
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 lower administrative distance is preferred over a higher one.
Administrative distance is used to select the best route when multiple routing protocols provide routes to the same destination. A lower administrative distance is preferred. The default administrative distance for OSPF is 110, and for EIGRP it is 90 (internal) or 170 (external).
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 lower administrative distance is preferred over a higher one.
Why this is correct
The route with the lowest administrative distance is installed in the routing table.
- ✓
Administrative distance is used to compare routes from different routing protocols.
Why this is correct
When multiple protocols provide routes to the same network, the one with the lowest AD is chosen.
- ✗
The default administrative distance for OSPF is 90.
Why it's wrong here
The default AD for OSPF is 110, not 90.
- ✗
Administrative distance is used to compare routes within the same routing protocol.
Why it's wrong here
Within the same protocol, metric is used for comparison, not AD.
- ✗
The default administrative distance for EIGRP internal routes is 170.
Why it's wrong here
The default AD for EIGRP internal routes is 90; external routes have AD 170.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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