The correct conclusion is that the EIGRP hello packets are being exchanged normally without any issues. This is because the debug eigrp packets hello output shows bidirectional hello messages on both Gi0/0 and Gi0/1, with Flags 0x0 indicating no special conditions like a restart or conditional receive, and Seq 0/0 confirming that no sequenced packets are pending or missing. In the context of the ENCOR 350-401 exam, this output tests your ability to distinguish a healthy EIGRP adjacency from one with problems such as K-value mismatches, passive interfaces, or authentication failures—common traps where you might see non-zero flags or sequence numbers. A key memory tip is to associate Flags 0x0 with “zero problems” and Seq 0/0 with “zero sequence issues,” meaning the neighbor relationship is forming cleanly.
350-401 EIGRP Practice Question
This 350-401 practice question tests your understanding of eigrp. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 on Router R1:
R1# debug eigrp packets hello
EIGRP: Received HELLO on Gi0/0 nbr 192.168.1.2
AS 100, Flags 0x0, Seq 0/0 interfaceQ 0/0
EIGRP: Sending HELLO on Gi0/0
AS 100, Flags 0x0, Seq 0/0 interfaceQ 0/0
EIGRP: Received HELLO on Gi0/1 nbr 10.1.1.2
AS 100, Flags 0x0, Seq 0/0 interfaceQ 0/0
EIGRP: Sending HELLO on Gi0/1
AS 100, Flags 0x0, Seq 0/0 interfaceQ 0/0
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The hello packets are being exchanged normally without any issues.
The debug output shows EIGRP hello packets being sent and received on both interfaces without any errors, sequence mismatches, or authentication failures. The 'Flags 0x0' and 'Seq 0/0' indicate normal operation, and the neighbor IPs are present, confirming that the EIGRP adjacency is forming correctly. Therefore, the hello packets are being exchanged normally without any issues.
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.
✗
EIGRP is using MD5 authentication between neighbors.
Why it's wrong here
Authentication would show 'auth' or 'digest' in the debug output; it is not present.
✓
The hello packets are being exchanged normally without any issues.
Why this is correct
The debug shows consistent sending and receiving of hellos with no errors.
Related concept
Read the scenario before looking for a memorised answer.
✗
There is a K-value mismatch between R1 and its neighbors.
Why it's wrong here
K-value mismatch would cause neighbor adjacency failure; the debug shows successful hello exchange.
✗
The router is using EIGRP named mode.
Why it's wrong here
Named mode would show 'IPv4-EIGRP' or similar; the debug shows 'EIGRP' with AS number.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between normal hello exchange and authentication or parameter mismatch by showing clean debug output with 'Flags 0x0' and 'Seq 0/0', leading candidates to incorrectly assume authentication is present or that a mismatch exists.
Trap categories for this question
Similar concept trap
Named mode would show 'IPv4-EIGRP' or similar; the debug shows 'EIGRP' with AS number.
Command / output trap
Authentication would show 'auth' or 'digest' in the debug output; it is not present.
Detailed technical explanation
How to think about this question
EIGRP hello packets are used for neighbor discovery and keepalive; the 'Seq 0/0' indicates that no reliable transport packets are pending, and 'Flags 0x0' means no special conditions (like restart or conditional receive) are set. In production, seeing continuous hello exchanges with no errors confirms that the EIGRP process is stable, but a missing neighbor in the output would indicate a Layer 2 or authentication issue.
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.
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.
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 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 350-401 question in full detail.
EIGRP — This question tests EIGRP — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The hello packets are being exchanged normally without any issues. — The debug output shows EIGRP hello packets being sent and received on both interfaces without any errors, sequence mismatches, or authentication failures. The 'Flags 0x0' and 'Seq 0/0' indicate normal operation, and the neighbor IPs are present, confirming that the EIGRP adjacency is forming correctly. Therefore, the hello packets are being exchanged normally without any issues.
What should I do if I get this 350-401 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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