The answer is that the routing table contains 8 networks and 17 subnets, with OSPF contributing the most routes. This is correct because the `show ip route summary` command provides a high-level breakdown of route sources, where the "Networks" column counts classful network entries and the "Subnets" column counts subnetted entries; the totals reflect the entire routing table size, and OSPF’s 5 networks and 10 subnets clearly dominate the output. On the Cisco CCNP ENARSI 300-410 exam, this question tests your ability to interpret routing table summary analysis quickly, often appearing in troubleshooting scenarios involving protocol redistribution or memory utilization. A common trap is confusing the "Networks" count with the total number of routes—remember that the actual route count is the sum of both columns, so here 8 + 17 equals 25 total routes, not just 8. For a quick memory tip, think "Networks are classful, subnets are classless; add them both to get the full route list."
300-410 Network Logging and Syslog Practice Question
This 300-410 practice question tests your understanding of network logging and syslog. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command to troubleshoot a Network Logging and Syslog issue:
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The routing table contains 8 networks and 17 subnets, with OSPF contributing the most routes.
The output shows the routing table summary, including the number of networks and subnets from each routing protocol. This helps in understanding the routing table size and protocol contributions.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The routing table contains 8 networks and 17 subnets, with OSPF contributing the most routes.
Why this is correct
The totals show 8 networks and 17 subnets; OSPF has 5 networks and 10 subnets.
The output shows 0 static routes, but that does not indicate configuration status.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Trap categories for this question
Command / output trap
The output shows 0 static routes, but that does not indicate configuration status.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 300-410 OSPF questions on adjacency and route selection.
Network Logging and Syslog — This question tests Network Logging and Syslog — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: The routing table contains 8 networks and 17 subnets, with OSPF contributing the most routes. — The output shows the routing table summary, including the number of networks and subnets from each routing protocol. This helps in understanding the routing table size and protocol contributions.
What should I do if I get this 300-410 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 300-410 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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