The correct conclusion is that GigabitEthernet0/1 will have a higher EIGRP metric than GigabitEthernet0/0 for the same prefix. This is because EIGRP metric calculation from interface detail relies on the composite metric formula, which with default K values (K1=K3=1, K2=K4=K5=0) simplifies to bandwidth plus delay. The show ip eigrp interfaces detail output reveals that Gi0/0 has a bandwidth of 1,000,000 Kbit and a delay of 100 microseconds, while Gi0/1 has a bandwidth of 100,000 Kbit and a delay of 1,000 microseconds—the lower bandwidth and higher delay on Gi0/1 produce a larger metric. On the ENCOR 350-401 exam, this tests your ability to read interface-level EIGRP parameters and apply the metric formula without a calculator; a common trap is forgetting that delay is expressed in tens of microseconds in the formula, so the displayed 100 microseconds becomes a delay value of 10. Remember the memory tip: "Bigger bandwidth and smaller delay mean a better path," so when you see a lower bandwidth and higher delay on an interface, expect a higher metric.
CCNP EIGRP Practice Question
This 350-401 practice question tests your understanding of eigrp. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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# show ip eigrp interfaces detail
EIGRP-IPv4 Interfaces for AS(100)
Interface: GigabitEthernet0/0
Mtu: 1500, Bandwidth: 1000000 Kbit, Delay: 100 microseconds
Reliability: 255/255, Load: 1/255, Min MTU: 1500
Hello interval: 5 sec, Hold time: 15 sec
Next hello in: 3 secs
Passive interface: No
Split horizon: Enabled
Authentication: None
Neighbor count: 1
Interface: GigabitEthernet0/1
Mtu: 1500, Bandwidth: 100000 Kbit, Delay: 1000 microseconds
Reliability: 255/255, Load: 1/255, Min MTU: 1500
Hello interval: 5 sec, Hold time: 15 sec
Next hello in: 1 secs
Passive interface: No
Split horizon: Enabled
Authentication: None
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
GigabitEthernet0/1 will have a higher EIGRP metric than GigabitEthernet0/0 for the same prefix.
Option B is correct because EIGRP uses the composite metric formula: metric = (K1 * bandwidth + (K2 * bandwidth) / (256 - load) + K3 * delay) * (K5 / (reliability + K4)). With default K values (K1=K3=1, others=0), the metric simplifies to bandwidth + delay. Gi0/0 has bandwidth 1,000,000 Kbit and delay 100 microseconds, while Gi0/1 has bandwidth 100,000 Kbit and delay 1000 microseconds. The lower bandwidth and higher delay on Gi0/1 result in a higher metric for the same prefix.
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.
✗
Both interfaces have the same metric weight for bandwidth and delay.
Why it's wrong here
Metric weights are not shown here; they are set by the 'metric weights' command globally.
✓
GigabitEthernet0/1 will have a higher EIGRP metric than GigabitEthernet0/0 for the same prefix.
Why this is correct
EIGRPmetric uses bandwidth and delay; lower bandwidth and higher delay increase the metric.
Related concept
Read the scenario before looking for a memorised answer.
✗
Interface Gi0/1 is configured as a passive interface.
Why it's wrong here
The output explicitly says 'Passive interface: No'.
✗
EIGRP authentication is enabled on both interfaces.
Why it's wrong here
Authentication is set to None.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that the 'show ip eigrp interfaces detail' command displays the K values or metric weights, when in fact it only shows per-interface parameters like bandwidth and delay, and the K values must be verified separately with 'show ip protocols'.
Trap categories for this question
Command / output trap
Metric weights are not shown here; they are set by the 'metric weights' command globally.
Detailed technical explanation
How to think about this question
EIGRP's composite metric calculation uses the slowest bandwidth along the path and the cumulative delay, with default K values of K1=1, K2=0, K3=1, K4=0, K5=0. The bandwidth is scaled by dividing 10^7 by the bandwidth in Kbps, so Gi0/0's bandwidth of 1,000,000 Kbit yields a scaled bandwidth of 10, while Gi0/1's 100,000 Kbit yields 100. The delay is in tens of microseconds, so Gi0/0's delay of 100 microseconds becomes 10, and Gi0/1's 1000 microseconds becomes 100. Thus, the metric for Gi0/0 is 10 + 10 = 20, and for Gi0/1 is 100 + 100 = 200, confirming Gi0/1 has a higher metric.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: GigabitEthernet0/1 will have a higher EIGRP metric than GigabitEthernet0/0 for the same prefix. — Option B is correct because EIGRP uses the composite metric formula: metric = (K1 * bandwidth + (K2 * bandwidth) / (256 - load) + K3 * delay) * (K5 / (reliability + K4)). With default K values (K1=K3=1, others=0), the metric simplifies to bandwidth + delay. Gi0/0 has bandwidth 1,000,000 Kbit and delay 100 microseconds, while Gi0/1 has bandwidth 100,000 Kbit and delay 1000 microseconds. The lower bandwidth and higher delay on Gi0/1 result in a higher metric for the same prefix.
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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Question Discussion
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