Question 1mediummatching
Full question →Match each route source or route type to its most accurate description.
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mediummatchingObjective-mapped
Match each route source or route type to its most accurate description.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking floating static routes for regular static routes that always take precedence. Many candidates incorrectly believe static routes override dynamic routes regardless of administrative distance. However, floating static routes are specifically configured with a higher administrative distance to act as backups, not primary routes. Misunderstanding this can lead to incorrect answers about route selection and failover behavior. Remember that floating static routes only become active when the preferred dynamic route is unavailable, ensuring proper redundancy without disrupting normal routing.
Technical deep dive
How to think about this question
Routing in Cisco networks relies on different route sources, each with unique characteristics that influence how routes are learned and prioritized. Connected routes represent networks directly attached to a router's interfaces and are automatically added to the routing table with the lowest administrative distance (AD) of 0, making them the most trusted. Static routes are manually configured paths that administrators use to define explicit routes for traffic, typically assigned an AD of 1. Dynamic routing protocols like OSPF learn routes automatically by exchanging link-state information, calculating the best path based on metrics such as cost, and assigning an AD of 110. The decision process for route selection in Cisco routers depends primarily on administrative distance, which ranks route sources by trustworthiness. Connected routes are preferred first, followed by static routes, then dynamic protocols like OSPF. Floating static routes are static routes configured with an artificially higher AD than dynamic routes, ensuring they act as backup routes that only become active if the primary dynamic route fails. This mechanism provides network redundancy without interfering with normal routing operations. A common exam trap is confusing floating static routes with regular static routes or misunderstanding the role of administrative distance. Candidates may incorrectly assume static routes always override dynamic routes or that floating static routes are active simultaneously with primary routes. In practice, floating static routes remain inactive until the preferred route is lost, preventing routing loops and ensuring seamless failover. Understanding these behaviors is critical for interpreting routing tables and designing resilient networks in Cisco environments.
KKey Concepts to Remember
- A connected route is automatically installed in the routing table when an interface is configured with an IP address and is operationally up, indicating a directly attached network.
- A static route is manually configured by a network administrator to specify a fixed path for traffic to reach a particular network, overriding dynamic routing protocols if necessary.
- OSPF (Open Shortest Path First) dynamically learns routes by exchanging link-state advertisements with other OSPF routers, building a topology map to calculate the shortest path.
- A floating static route is a static route configured with a higher administrative distance than dynamic routes, serving as a backup path that activates only if the primary route fails.
- Administrative distance determines the trustworthiness of a route source, with lower values preferred; connected routes have the lowest AD, followed by static, then dynamic protocols like OSPF.
- Routing tables prioritize routes based on administrative distance and metric; understanding route source types helps in troubleshooting and predicting routing behavior.
- Static routes require manual updates if network topology changes, whereas OSPF automatically adapts to topology changes by recalculating routes.
- Floating static routes provide redundancy by remaining inactive under normal conditions and only taking effect when dynamic routes become unavailable.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
A connected route is automatically installed in the routing table when an interface is configured with an IP address and is operationally up, indicating a directly attached network.
What exam trap should I watch out for?
Common exam trap: answer the scenario, not the keyword: A frequent exam trap is mistaking floating static routes for regular static routes that always take precedence. Many candidates incorrectly believe static routes override dynamic routes regardless of administrative distance. However, floating static routes are specifically configured with a higher administrative distance to act as backups, not primary routes. Misunderstanding this can lead to incorrect answers about route selection and failover behavior. Remember that floating static routes only become active when the preferred dynamic route is unavailable, ensuring proper redundancy without disrupting normal routing.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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