The correct next step is to check that the sensor-group and destination-group are correctly associated and committed under the telemetry subscription. This is because model-driven telemetry on Cisco XR routers relies on a subscription to explicitly link a sensor-group—which defines the data to collect—with a destination-group—which specifies where to send it. Without this association, the router has no instruction to push data, even if the collector is reachable and the YANG models are valid. On the Cisco SPCOR 350-501 exam, this scenario tests your understanding of the telemetry configuration hierarchy, often appearing as a distractor where candidates mistakenly check SNMP or routing tables. A common trap is assuming that a reachable destination alone guarantees data flow; the subscription is the critical glue. Memory tip: think of the subscription as a “bridge”—no bridge, no data flow.
350-501 Automation and Assurance Practice Question
This 350-501 practice question tests your understanding of automation and assurance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
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?
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
A common misconfiguration is that the sensor-group and destination-group are not properly associated under the subscription. The telemetry configuration requires a subscription that links a sensor-group with a destination-group. Without correct association, no data is sent. SNMP, routes, YANG model validity, or reboot are not the immediate next step.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Related concept
Static NAT maps one inside address to one outside address.
✗
Reboot the router
Why it's wrong here
Rebooting is unnecessary and would not fix a configuration issue.
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-501 NAT questions on configuration and troubleshooting.
Automation and Assurance — This question tests Automation and Assurance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Check that the sensor-group and destination-group are correctly associated and committed in the subscription — A common misconfiguration is that the sensor-group and destination-group are not properly associated under the subscription. The telemetry configuration requires a subscription that links a sensor-group with a destination-group. Without correct association, no data is sent. SNMP, routes, YANG model validity, or reboot are not the immediate next step.
What should I do if I get this 350-501 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-501 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Refer to the exhibit. A telemetry subscription is configured on an IOS-XR router. The collector at 10.1.1.100 is not receiving data. Which configuration error is present?
medium
A.The destination IP address is incorrect
✓ B.Missing 'protocol' specification in the destination-group
C.The sample-interval is too short
D.The subscription is not committed
E.The sensor-group path is invalid
Why B: In IOS-XR, the destination-group requires a protocol (e.g., 'protocol grpc') to be specified. Without it, the destination is incomplete and data will not be sent. The sensor-group path is valid, sample-interval is reasonable, destination IP/port are present, and subscription is committed. The missing protocol is the most likely error.
Variation 2. Refer to the exhibit. An engineer configured a telemetry subscription to push interface state data to a collector. The subscription shows 'State: Invalid'. What is the most likely cause?
medium
A.The encoding 'encode-kvgpb' is not supported; must use 'encode-json'.
✓ B.The collector at 192.168.1.1:57500 is not reachable or the service is down.
C.The xpath filter is malformed; it should be /interfaces/interface/state.
D.The periodic update interval of 500 ms is too fast causing subscription failure.
Why B: The 'State: Invalid' with error 'Connection refused' indicates that the receiver (collector) is not accepting the connection. The most likely fix is to ensure the collector is up and listening on the specified port. Option C correctly identifies this. Option A is wrong because the xpath syntax is correct for the model. Option B is wrong because encoding kvgpb is valid. Option D is wrong because the periodic update policy is correctly configured.
Last reviewed: Jun 24, 2026
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This 350-501 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 350-501 exam.
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