Question 95 of 2,152

Embedded Event Manager (EEM) →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is that the EEM applet named TRACK-INTERFACE is active and will execute the 'show ip route' command whenever a syslog message matching the pattern OSPF-5-ADJCHG is generated. This is correct because the 'show event manager policy active' command displays all currently registered and enabled EEM policies, including their trigger events and associated actions; here, the applet is waiting for a specific syslog event (an OSPF adjacency change) to fire its CLI action. On the Cisco CCNP ENARSI 300-410 exam, this output tests your ability to interpret EEM configuration and verify that an applet is properly registered and armed—a common trap is confusing the "active" list with the "registered" list, as only policies that have met all conditions appear here. Remember the memory tip: "Active means armed and waiting—check the event type and action pair to confirm the trigger."

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 policy active

No. Class Type Version Time Created Name 1 applet system 1.0 Mar 1 00:00:12 2025 TRACK-INTERFACE Event Type: syslog (pattern OSPF-5-ADJCHG) Action: cli command 'show ip route'

What does this output indicate?

Question 1mediummultiple choice

Review the full OSPF breakdown →

A
The EEM applet 'TRACK-INTERFACE' is active and will execute 'show ip route' when a syslog message matching 'OSPF-5-ADJCHG' is generated.
Correct. The output shows the applet is active, triggered by syslog pattern OSPF-5-ADJCHG, and will execute the CLI command 'show ip route'.
B
The EEM applet 'TRACK-INTERFACE' is currently executing and has run 'show ip route'.
Why wrong: Incorrect. 'Active' means it is registered and waiting for the trigger, not currently executing.
C
The EEM applet 'TRACK-INTERFACE' has been triggered and the output of 'show ip route' is displayed.
Why wrong: Incorrect. The output shows the policy definition, not the result of execution.
D
The EEM applet 'TRACK-INTERFACE' is inactive and needs to be enabled.
Why wrong: Incorrect. The applet is listed as active, meaning it is enabled.

Full breakdown with real-world context →

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 EEM applet 'TRACK-INTERFACE' is active and will execute 'show ip route' when a syslog message matching 'OSPF-5-ADJCHG' is generated.

The output shows active EEM policies that are currently enabled and waiting for their trigger events. It displays the applet name, class, type, version, creation time, the event that triggers it, and the actions it will execute. This helps verify that an applet is active and what it does.

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 EEM applet 'TRACK-INTERFACE' is active and will execute 'show ip route' when a syslog message matching 'OSPF-5-ADJCHG' is generated.
Why this is correct
Correct. The output shows the applet is active, triggered by syslog pattern OSPF-5-ADJCHG, and will execute the CLI command 'show ip route'.
Related concept
OSPF neighbours must agree on key parameters.
✗
The EEM applet 'TRACK-INTERFACE' is currently executing and has run 'show ip route'.
Why it's wrong here
Incorrect. 'Active' means it is registered and waiting for the trigger, not currently executing.
✗
The EEM applet 'TRACK-INTERFACE' has been triggered and the output of 'show ip route' is displayed.
Why it's wrong here
Incorrect. The output shows the policy definition, not the result of execution.
✗
The EEM applet 'TRACK-INTERFACE' is inactive and needs to be enabled.
Why it's wrong here
Incorrect. The applet is listed as active, meaning it is enabled.

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 policy definition, not the result of execution.

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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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 EEM applet 'TRACK-INTERFACE' is active and will execute 'show ip route' when a syslog message matching 'OSPF-5-ADJCHG' is generated. — The output shows active EEM policies that are currently enabled and waiting for their trigger events. It displays the applet name, class, type, version, creation time, the event that triggers it, and the actions it will execute. This helps verify that an applet is active and what it does.

What should I do if I get this 300-410 question wrong?

What is the key concept behind this question?

OSPF neighbours must agree on key parameters.

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