350-501 Automation and Assurance Practice Question
An engineer configures model-driven telemetry on a Cisco XR router to send data to a collector. After configuring, the collector receives no data. The engineer verifies that the collector IP and port are reachable. What is the next step to troubleshoot?
⚠ Common exam trap
Cisco often tests the misconception that reachability alone guarantees telemetry data flow, when in fact the subscription's sensor-group and destination-group association is the critical link that must be correctly configured and committed.
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
✓
Check that the sensor-group and destination-group are correctly associated and committed in the subscription
In model-driven telemetry on Cisco XR, a subscription must explicitly associate a sensor-group (which defines the data to collect) with a destination-group (which defines where to send it). If these are not correctly associated and committed, the router will not stream any telemetry data to the collector, even if the collector is reachable. The verification of reachability confirms the network path is fine, so the next logical step is to check the subscription configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Check if the YANG model is valid
Why it's wrong here
Invalid YANG path would be rejected at configuration time, not silently fail at runtime.
- ✗
Verify that the router has a route to the collector
Why it's wrong here
The engineer already verified reachability, so routing is not the issue.
- ✓
Check that the sensor-group and destination-group are correctly associated and committed in the subscription
Why this is correct
The subscription must link the sensor-group and destination-group; if misconfigured, no data is sent.
- ✗
Reboot the router
Why it's wrong here
Rebooting is unnecessary and would not fix a configuration issue.
- ✗
Check the SNMP community strings
Why it's wrong here
SNMP is not used for model-driven telemetry.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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