CCNP Network Assurance Practice Question
A network engineer needs to verify the performance of a WAN link between two Cisco routers. The engineer configures an IP SLA operation on Router A that sends ICMP echo requests to Router B every 60 seconds and stores the results. After a week, the engineer checks the results and finds that the operation has been running successfully, but no history data is available. What is the most likely reason for the lack of history data?
⚠ Common exam trap
The trap here is assuming that IP SLA automatically stores history data once the operation runs successfully.
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 IP SLA operation was not configured to collect history statistics.
IP SLA operations only collect history statistics when explicitly configured with the 'history statistics' command. Without this, only the most recent results are available. The engineer saw successful results, indicating the operation ran, but no history was stored because the history collection was not enabled. Enabling history statistics allows the router to maintain a record of past operations for analysis.
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 operation was not configured to collect history statistics.
Why this is correct
IP SLA operations do not collect history data by default. The 'history statistics' command must be configured under the IP SLA operation to enable collection of historical data. Without it, only the latest results are available. The engineer saw successful results but no history, which points to missing history configuration.
- ✗
The IP SLA responder was not enabled on Router B.
Why it's wrong here
The responder is only needed for certain operation types like UDP jitter or TCP connect, not for ICMP echo. For ICMP echo, the destination router simply responds to the ICMP packets as normal. The operation succeeded, so the responder is not the issue.
- ✗
The IP SLA operation was not configured with a schedule.
Why it's wrong here
If the operation had no schedule, it would not have run at all, and the engineer would not see successful results. The operation was running, so a schedule must exist. The lack of history data is due to missing history collection configuration, not scheduling.
- ✗
The IP SLA operation was configured with the wrong frequency.
Why it's wrong here
The frequency determines how often the operation runs, but it does not affect whether history data is stored. Even with a low frequency, history would be collected if configured. The absence of history indicates a missing history configuration, not a frequency problem.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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