The correct statement is that the IP SLA probe is successfully reaching the target with no failures. This conclusion is drawn directly from the show ip sla statistics output, which displays 100 successes and 0 failures for the ICMP echo operation, alongside a latest return code of OK. In IP SLA statistics verification, the "Number of successes" and "Number of failures" fields provide a clear, cumulative success rate, while the return code confirms the most recent probe result. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to interpret IP SLA health at a glance, often appearing in troubleshooting scenarios where you must distinguish between a working probe and one with intermittent failures. A common trap is overlooking the "Latest operation return code" — even with many successes, a non-OK code indicates a recent problem. Remember the memory tip: "100-0 equals all go, check the return code for the latest show."
300-410 Device Access Control Practice Question
This 300-410 practice question tests your understanding of device access control. 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 sla statistics
IPSLAs Latest Operation Statistics
IPSLA operation id: 1
Type of operation: icmp-echo
Latest RTT: 20 milliseconds
Latest operation start time: 12:00:00 UTC Mon Mar 1 2021
Latest operation return code: OK
Number of successes: 100
Number of failures: 0
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The IP SLA probe is successfully reaching the target with no failures.
The output shows 100 successes and 0 failures for the ICMP echo operation, with a latest return code of OK, confirming that the IP SLA probe is successfully reaching the target without any failures. The 'Number of successes: 100' and 'Number of failures: 0' directly indicate a 100% success rate for the probe.
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 IP SLA probe is successfully reaching the target with no failures.
Why this is correct
The return code is OK, and there are 100 successes with 0 failures.
Related concept
Read the scenario before looking for a memorised answer.
The IP SLA probe is not configured because the operation ID is 1.
Why it's wrong here
The operation ID 1 is valid and shows statistics.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the ability to interpret the 'Number of successes' and 'Number of failures' fields correctly, where candidates may mistakenly associate the count with failures instead of successes, or confuse the operation type (ICMP echo vs. UDP jitter) based on the operation ID alone.
Trap categories for this question
Command / output trap
The operation ID 1 is valid and shows statistics.
Detailed technical explanation
How to think about this question
IP SLA uses ICMP echo to measure round-trip time (RTT) and reachability, similar to a ping but with more granular tracking and scheduling. The 'Latest operation return code: OK' confirms the last probe received a valid ICMP echo reply, while the cumulative counters (100 successes, 0 failures) provide a historical view of reliability. In real-world scenarios, this output is used to verify SLA compliance for WAN links, where even a single failure could indicate a degradation requiring investigation.
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 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.
Device Access Control — This question tests Device Access Control — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The IP SLA probe is successfully reaching the target with no failures. — The output shows 100 successes and 0 failures for the ICMP echo operation, with a latest return code of OK, confirming that the IP SLA probe is successfully reaching the target without any failures. The 'Number of successes: 100' and 'Number of failures: 0' directly indicate a 100% success rate for the probe.
What should I do if I get this 300-410 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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