- A
The applet 'TRACK-INTERFACE' has been triggered 5 times and executed successfully each time, with the last trigger at 00:15:30.
Correct. The trigger count and execution count are both 5, and the last action result is 'Success'.
- B
The applet 'TRACK-INTERFACE' has failed to execute 5 times.
Why wrong: Incorrect. The execution count equals the trigger count, and the last action result is 'Success', indicating successful execution.
- C
The applet 'TRACK-INTERFACE' has not been triggered since it was created.
Why wrong: Incorrect. The trigger count is 5, and the last trigger time is provided.
- D
The applet 'TRACK-INTERFACE' executed the action 'show ip route' but the output was not captured.
Why wrong: Incorrect. The output shows the last action executed and its result, but does not indicate whether output was captured. The command history does not show command output.
Quick Answer
The correct interpretation is that the applet 'TRACK-INTERFACE' has been triggered 5 times and executed successfully each time, with the last trigger occurring at 00:15:30. This is evident because the Trigger Count and Execution Count both show 5, and the Last Action Result is listed as "Success," confirming that every trigger resulted in a completed action without failure. On the Cisco CCNP ENARSI 300-410 exam, the show event manager history applet output interpretation tests your ability to verify EEM applet behavior, specifically whether an applet is being triggered as expected and whether its actions are executing without errors. A common trap is confusing "Trigger Count" with "Execution Count"—if these numbers differ, it indicates that some triggers did not lead to successful execution, often due to policy errors or missing conditions. Remember the memory tip: "Match the counts to check the outcome"—if trigger and execution counts are equal, every event was handled; if they differ, something went wrong.
300-410 Embedded Event Manager (EEM) Practice Question
This 300-410 practice question tests your understanding of embedded event manager (eem). 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 an EEM issue:
R1# show event manager history applet TRACK-INTERFACE
Applet TRACK-INTERFACE: Time Created : Mar 1 00:00:12 2025 Time Last Triggered : Mar 1 00:15:30 2025 Time Last Executed : Mar 1 00:15:30 2025 Trigger Count : 5 Execution Count : 5 Last Event Type : syslog Last Event Detail : OSPF-5-ADJCHG Last Action Executed : show ip route Last Action Result : Success
What does this output indicate?
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
The applet 'TRACK-INTERFACE' has been triggered 5 times and executed successfully each time, with the last trigger at 00:15:30.
The output shows the history for a specific EEM applet. It includes creation time, last trigger and execution times, trigger and execution counts, the last event that triggered it, the last action executed, and the result. This helps in determining if the applet is being triggered and executing successfully.
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 applet 'TRACK-INTERFACE' has been triggered 5 times and executed successfully each time, with the last trigger at 00:15:30.
Why this is correct
Correct. The trigger count and execution count are both 5, and the last action result is 'Success'.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
The applet 'TRACK-INTERFACE' has failed to execute 5 times.
Why it's wrong here
Incorrect. The execution count equals the trigger count, and the last action result is 'Success', indicating successful execution.
- ✗
The applet 'TRACK-INTERFACE' has not been triggered since it was created.
Why it's wrong here
Incorrect. The trigger count is 5, and the last trigger time is provided.
- ✗
The applet 'TRACK-INTERFACE' executed the action 'show ip route' but the output was not captured.
Why it's wrong here
Incorrect. The output shows the last action executed and its result, but does not indicate whether output was captured. The command history does not show command output.
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
Incorrect. The output shows the last action executed and its result, but does not indicate whether output was captured. The command history does not show command output.
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.
What to study next
Got this wrong? Here's your next step.
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.
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Embedded Event Manager (EEM) — study guide chapter
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FAQ
Questions learners often ask
What does this 300-410 question test?
Embedded Event Manager (EEM) — This question tests Embedded Event Manager (EEM) — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: The applet 'TRACK-INTERFACE' has been triggered 5 times and executed successfully each time, with the last trigger at 00:15:30. — The output shows the history for a specific EEM applet. It includes creation time, last trigger and execution times, trigger and execution counts, the last event that triggered it, the last action executed, and the result. This helps in determining if the applet is being triggered and executing successfully.
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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Last reviewed: Jun 18, 2026
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