easyMultiple Choice
350-401 Practice Question: Runs the following command on Router R4: R4# show…
A network engineer runs the following command on Router R4:
R4# show ip sla monitor statistics 3
Round Trip Time (RTT) for Index 3 Latest RTT: 25 ms Latest Operation Start Time: 14:30:00.000 UTC Mon Mar 1 2021 Latest Operation Return Code: OK Number of successes: 100 Number of failures: 0 Over thresholds: 0
Based on this output, what can be concluded about the IP SLA operation?
⚠ Common exam trap
Cisco often tests the distinction between 'Number of failures' (historical count) and 'Latest Operation Return Code' (current status), leading candidates to misinterpret a zero failure count as meaning the operation is currently failing when it is actually succeeding.
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 operation is working correctly with no failures.
The output shows 'Number of successes: 100' and 'Number of failures: 0', with a 'Latest Operation Return Code: OK', indicating that the IP SLA operation has been consistently successful without any failures. The latest RTT of 25 ms and the absence of threshold violations confirm the operation is working correctly.
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 operation has experienced failures.
Why it's wrong here
The output from the IP SLA operation shows a success count of 100 and a failure count of exactly 0. This counter tracks every probe that did not receive a valid response, and a zero indicates that no request has been lost, timed out, or returned an error since the operation started. Therefore, asserting that the operation has experienced failures contradicts the explicit failure counter and is incorrect.
- ✗
The operation is currently failing.
Why it's wrong here
The latest return code displayed is 'OK', which means the most recent IP SLA probe completed successfully without any error condition. In Cisco IOS, the return code field is the authoritative indicator of the current operational state, and 'OK' signifies that the round-trip response was received and the measured metrics are valid. Thus the operation is not currently failing; it is actively succeeding.
- ✓
The operation is working correctly with no failures.
Why this is correct
The IP SLA statistics reveal 100 successful probes with zero failures, meaning every request received a timely response and the operation has operated flawlessly over its lifetime. Additionally, the return code is 'OK', confirming the latest probe is also successful, and the over-threshold counter is 0, so no latency issues have been encountered. This all indicates the operation is functioning correctly and meeting its configured performance expectations.
- ✗
The round-trip time exceeds the threshold.
Why it's wrong here
The 'over thresholds' counter in the IP SLA output is 0, which indicates that no round-trip time measurement has ever crossed the configured upper latency threshold. The operation also reports a return code of 'OK', which would be set to 'OverThreshold' if the latest RTT had exceeded the threshold, so the current RTT is within bounds. Therefore, the claim that RTT exceeds the threshold is unsupported by the counters and return code.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 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 350-401 exam.