The answer is that the EEM applet uses the wrong SNMP OID for memory monitoring, specifically OID 1.3.6.1.4.1.9.9.48.1.1.1.6.1, which tracks free memory rather than used memory. The applet’s condition checks if free memory is greater than 90%, so when actual memory usage exceeds 90%, free memory is below 10%, and the condition is never met—hence the applet never triggers. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your understanding of Cisco’s CISCO-PROCESS-MIB and the common trap of confusing free versus used memory OIDs. The correct fix is either to use the OID for used memory (1.3.6.1.4.1.9.9.48.1.1.1.5.1) or change the operator to ‘lt’ with a threshold of 10. Memory tip: “Free is low when used is high”—always verify whether your OID measures free or used resources before setting comparison operators.
300-410 Embedded Event Manager (EEM) Practice Question
This 300-410 practice question tests your understanding of embedded event manager (eem). 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 configures EEM to monitor memory usage on R1. R1 has: event manager applet MEM-MONITOR event snmp oid 1.3.6.1.4.1.9.9.48.1.1.1.6.1 get-type exact entry-op gt entry-val 90 poll-interval 10 action 1.0 cli command "enable" action 2.0 cli command "show processes memory" action 3.0 syslog msg "High memory usage detected". After a few days, the engineer notices that the applet never triggers, even though memory usage exceeds 90%. Router R2 shows: memory usage is at 95%, but no syslog from EEM. What is the root cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "never"
Why it matters: Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The SNMP OID is for free memory, and the condition checks if free memory is greater than 90%, which is not met when memory is low.
The SNMP OID used (1.3.6.1.4.1.9.9.48.1.1.1.6.1) is for the free memory, not used memory. The applet checks if free memory is greater than 90%, which is false when memory is low. The correct OID should be for used memory or the comparison operator should be 'lt' for free memory below 10%.
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.
✓
The SNMP OID is for free memory, and the condition checks if free memory is greater than 90%, which is not met when memory is low.
Why this is correct
The OID returns free memory; the applet triggers only when free memory >90%, which never happens when memory is high.
Clue confirmation
The clue word "never" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The poll-interval of 10 seconds is too short and causes the applet to be suppressed.
Why it's wrong here
A short poll interval does not prevent triggering; the condition is never true.
✗
The SNMP community string is not configured, so the OID cannot be polled.
Why it's wrong here
No mention of SNMP community; the issue is the OID logic.
✗
The applet requires 'event manager applet MEM-MONITOR trigger' to start.
Why it's wrong here
The applet is configured with an event trigger; no additional trigger command is needed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
The applet is configured with an event trigger; no additional trigger command is needed.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Embedded Event Manager (EEM) — This question tests Embedded Event Manager (EEM) — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The SNMP OID is for free memory, and the condition checks if free memory is greater than 90%, which is not met when memory is low. — The SNMP OID used (1.3.6.1.4.1.9.9.48.1.1.1.6.1) is for the free memory, not used memory. The applet checks if free memory is greater than 90%, which is false when memory is low. The correct OID should be for used memory or the comparison operator should be 'lt' for free memory below 10%.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "never". Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.
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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