This 300-410 practice question tests your understanding of route summarization. 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 Route Summarization issue:
R1# show ip eigrp topology 10.0.0.0/16
IP-EIGRP topology entry for 10.0.0.0/16
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 128576
Routing Descriptor Blocks:
10.1.1.2 (Serial0/0/0), from 10.1.1.2, Send flag is 0x0
Composite metric is (128576/156160), Route is Internal
Vector metric:
Minimum bandwidth is 10000 Kbit
Total delay is 2000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
What does this output indicate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The summary route 10.0.0.0/16 is installed in the routing table and reachable via 10.1.1.2.
This output shows the EIGRP topology table entry for the summary route 10.0.0.0/16. The state is Passive, meaning the route is stable and reachable. The presence of a successor and the metric details indicate that the summary route is being advertised and learned via EIGRP.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 summary route 10.0.0.0/16 is installed in the routing table and reachable via 10.1.1.2.
Why this is correct
The output shows a valid successor and passive state, confirming the route is installed and reachable.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The summary route is in active state, indicating a query is in progress.
Why it's wrong here
The state is Passive, not Active.
✗
The summary route is not being advertised because the FD is too high.
Why it's wrong here
The FD value is normal and does not prevent advertisement.
✗
The summary route is learned via redistribution, not summarization.
Why it's wrong here
The route is marked as Internal, indicating it is from within the same EIGRP AS.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Route Summarization — This question tests Route Summarization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The summary route 10.0.0.0/16 is installed in the routing table and reachable via 10.1.1.2. — This output shows the EIGRP topology table entry for the summary route 10.0.0.0/16. The state is Passive, meaning the route is stable and reachable. The presence of a successor and the metric details indicate that the summary route is being advertised and learned via EIGRP.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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