easyMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to troubleshoot an…
A network engineer runs the following command to troubleshoot an EIGRP issue:
R1# show ip eigrp interfaces detail Interface GigabitEthernet0/0
EIGRP interface state: Enabled, Up Hello interval: 5 sec, Hold time: 15 sec Split horizon: Enabled Next multicast: 0.0.0.0, Next update: 0.0.0.0 Bandwidth: 10000 Kbit, Delay: 100 us Reliability: 255/255, Load: 1/255, MTU: 1500 Packets sent: 100, received: 95 Authentication: MD5, key chain: EIGRP-KEY Passive interface: No
What does this output indicate?
⚠ Common exam trap
Cisco often tests the distinction between 'Passive interface: No' (meaning hellos are sent) and the passive-interface command (which suppresses hellos), leading candidates to incorrectly assume a passive interface when it is not explicitly stated.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
EIGRP is using MD5 authentication with key chain EIGRP-KEY, and the interface is actively sending and receiving EIGRP packets.
The output shows the interface is enabled and up, with MD5 authentication configured using key chain EIGRP-KEY. The 'Packets sent: 100, received: 95' indicates active packet exchange, and 'Passive interface: No' confirms hellos are being sent. This means EIGRP is actively sending and receiving packets with MD5 authentication.
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 with key chain EIGRP-KEY, and the interface is actively sending and receiving EIGRP packets.
Why this is correct
The output confirms authentication and active interface state.
- ✗
EIGRP is configured as a passive interface, so no hellos are sent.
Why it's wrong here
The output shows 'Passive interface: No', meaning hellos are sent.
- ✗
Split horizon is disabled, allowing route advertisement back to the source.
Why it's wrong here
Split horizon is enabled.
- ✗
The interface is using plain-text authentication.
Why it's wrong here
Authentication is MD5, not plain-text.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.