mediumMultiple Choice
350-401 Practice Question: Consider the following partial configuration on…
Consider the following partial configuration on Router R1:
ip sla 5
icmp-echo 10.5.5.5 frequency 10
ip sla schedule 5 life forever start-time now ip sla reaction-configuration 5 react rtt threshold-type immediate threshold-value 200 action-type triggerAndReset
What is the effect of the 'action-type triggerAndReset' parameter?
⚠ Common exam trap
Cisco often tests the distinction between 'triggerAndReset' (which allows repeated triggers) and 'triggerOnly' (which triggers once and then stops monitoring), so the trap here is confusing 'triggerAndReset' with a one-time action or a consecutive-count threshold.
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
✓
It triggers an event each time the RTT exceeds 200 ms and resets the counter after each trigger.
The 'action-type triggerAndReset' parameter in the IP SLA reaction configuration causes the router to generate an event (e.g., a syslog message or SNMP trap) each time the measured round-trip time (RTT) exceeds the specified threshold of 200 ms. After each trigger, the monitoring state is reset, allowing the router to continue monitoring and trigger again on subsequent threshold violations. This is why option B is correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It triggers an event once and then stops monitoring.
Why it's wrong here
This describes the 'triggerOnly' reaction type, not the configured 'triggerAndReset'. With 'triggerOnly', IP SLA raises an event exactly once and then disables further reaction monitoring for that condition, effectively stopping event generation until the configuration is changed. In contrast, 'triggerAndReset' re-arms the reaction after each threshold crossing, so the probe continues to evaluate and report subsequent violations. It does not stop monitoring after the first event; rather, it resets the counter and keeps watching each new RTT sample.
- ✓
It triggers an event each time the RTT exceeds 200 ms and resets the counter after each trigger.
Why this is correct
Under the 'immediate' threshold type, the IP SLA reaction fires as soon as a single RTT probe exceeds 200 ms. The 'triggerAndReset' action then resets the reaction counter to zero, enabling the condition to be re-triggered by the very next qualifying probe. This creates a repeating event stream for every individual crossing above 200 ms, rather than a one-time or sustained-detection alert. The IP SLA operation itself remains active and keeps generating probes, so each new violation is independently reported without administrative intervention.
- ✗
It triggers an event only if the RTT exceeds 200 ms for 5 consecutive probes.
Why it's wrong here
This option describes a consecutive-count threshold, such as 'threshold-type consecutive 5' (or 'xof 5'), which requires a contiguous series of 5 probes all above 200 ms before an event is fired. The configured 'threshold-type immediate' evaluates each probe in isolation and triggers the event as soon as any single RTT exceeds 200 ms, with no need to wait for multiple failures. By requiring five consecutive probes, this option incorrectly adds a temporal accumulation that the 'immediate' condition simply does not impose. Therefore, it misidentifies the threshold evaluation logic and the number of samples needed to activate the reaction.
- ✗
It triggers an event and then immediately stops the IP SLA operation.
Why it's wrong here
This option confuses the reaction's reset behavior with the operational state of the IP SLA probe. 'triggerAndReset' only governs how the reaction monitor behaves after an event: it resets the counter and continues to watch for future violations, but it does not stop, pause, or terminate the IP SLA operation. The probe schedule, timeout, and statistics collection remain active, and the operation continues to send probes on its configured interval. Stopping the IP SLA operation would require an explicit 'stop' command or separate control action, not a reaction trigger type. Thus, this answer incorrectly implies that the reaction mechanism controls the lifecycle of the entire SLA operation.
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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.