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300-410 Practice Question: Which TWO statements about the interaction…
Which TWO statements about the interaction between administrative distance and floating static routes 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 floating static route must have an administrative distance higher than the primary route's AD to serve as a backup.
A floating static route is a static route with an administrative distance greater than the dynamic routing protocol's AD, so it only appears in the routing table when the dynamic route is lost. The default AD for a static route is 1, but it can be changed. The floating static route will be installed when the primary route (with lower AD) is removed. The backup route must have a higher AD than the primary route. The distance command under the routing protocol does not affect the static route's AD.
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 floating static route must have an administrative distance higher than the primary route's AD to serve as a backup.
Why this is correct
Correct. The floating static route is configured with a higher AD so it is only used when the primary route (with lower AD) is not available.
- ✗
The default administrative distance for a static route is 0.
Why it's wrong here
Incorrect. The default AD for a static route is 1. An AD of 0 is reserved for connected routes.
- ✗
A floating static route will be installed in the routing table immediately after the primary route is removed, even if the next-hop is unreachable.
Why it's wrong here
Incorrect. The floating static route is only installed if the next-hop is reachable (unless configured with 'permanent' keyword). If the next-hop is unreachable, the route will not be added.
- ✓
The 'ip route' command can be used to configure a floating static route by specifying an administrative distance value.
Why this is correct
Correct. The syntax 'ip route prefix mask next-hop [distance]' allows setting a custom AD, enabling the creation of a floating static route.
- ✗
A floating static route can only be used with OSPF as the primary routing protocol.
Why it's wrong here
Incorrect. Floating static routes can be used with any dynamic routing protocol (EIGRP, OSPF, BGP, etc.) as long as the AD is set appropriately.
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
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.