- A
The 'telemetry' command enters the telemetry configuration submode, where subscriptions and sensor groups are defined.
Correct because 'telemetry' at global config mode enters the telemetry configuration context, where you can configure subscriptions, sensor groups, and receivers.
- B
A sensor group can contain multiple sensor paths, each referencing a YANG data model path.
Correct because a sensor group under 'telemetry' can include multiple 'sensor-path' statements, each specifying a YANG path to collect data from.
- C
The 'update-policy' command is used to set the on-change trigger for a subscription.
Why wrong: Incorrect because 'update-policy' is used to set the periodic sample interval (e.g., 'update-policy periodic 5000' for 5 seconds). On-change subscriptions are configured using the 'sensor-group' with 'on-change' keyword, not 'update-policy'.
- D
A single subscription can only have one sensor group and one receiver.
Why wrong: Incorrect because a subscription can have multiple sensor groups (using 'sensor-group' multiple times) and multiple receivers (using 'receiver' multiple times) to send data to different collectors.
- E
The 'receiver' command specifies the destination IP address, port, and protocol (e.g., gRPC or TCP) for the telemetry stream.
Correct because the 'receiver' command under a subscription defines the collector's IP, port, and transport protocol (e.g., 'receiver 10.1.1.1 50001 protocol grpc-tcp').
Quick Answer
The answer is that the 'receiver' command specifies the destination IP address, port, and protocol for the telemetry stream, which is a foundational truth when configuring model-driven telemetry on IOS-XE CLI. This is correct because model-driven telemetry uses a subscription-based model under the 'telemetry' submode, where the 'receiver' command defines the collector’s details—such as IP, port, and transport protocol (e.g., gRPC or TCP)—while sensor groups map to YANG paths and the 'update-policy' sets the periodic interval. On the ENCOR 350-401 exam, this topic tests your ability to distinguish between subscription components, with a common trap being confusion over whether the 'receiver' or 'subscription' command defines the destination; remember, the receiver is the collector endpoint, not the subscription itself. A useful memory tip is "Receiver = Remote endpoint, Subscription = Sensor + Schedule."
350-401 Model-Driven Telemetry Practice Question
This 350-401 practice question tests your understanding of model-driven telemetry. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which three statements about configuring model-driven telemetry on Cisco IOS-XE devices are true? (Choose three.)
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 'telemetry' command enters the telemetry configuration submode, where subscriptions and sensor groups are defined.
On IOS-XE, telemetry is configured under the 'telemetry' submode. A subscription defines the destination (e.g., IP, port, protocol) and the sensor paths (YANG paths). Multiple sensor groups can be associated with one subscription. The 'update-policy' command sets the periodic interval. The 'receiver' command specifies the collector details. TLS is supported for secure dial-out connections.
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.
- ✓
The 'telemetry' command enters the telemetry configuration submode, where subscriptions and sensor groups are defined.
Why this is correct
Correct because 'telemetry' at global config mode enters the telemetry configuration context, where you can configure subscriptions, sensor groups, and receivers.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
A sensor group can contain multiple sensor paths, each referencing a YANG data model path.
Why this is correct
Correct because a sensor group under 'telemetry' can include multiple 'sensor-path' statements, each specifying a YANG path to collect data from.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
The 'update-policy' command is used to set the on-change trigger for a subscription.
Why it's wrong here
Incorrect because 'update-policy' is used to set the periodic sample interval (e.g., 'update-policy periodic 5000' for 5 seconds). On-change subscriptions are configured using the 'sensor-group' with 'on-change' keyword, not 'update-policy'.
- ✗
A single subscription can only have one sensor group and one receiver.
Why it's wrong here
Incorrect because a subscription can have multiple sensor groups (using 'sensor-group' multiple times) and multiple receivers (using 'receiver' multiple times) to send data to different collectors.
- ✓
The 'receiver' command specifies the destination IP address, port, and protocol (e.g., gRPC or TCP) for the telemetry stream.
Common exam traps
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.
Trap categories for this question
Keyword trap
Incorrect because 'update-policy' is used to set the periodic sample interval (e.g., 'update-policy periodic 5000' for 5 seconds). On-change subscriptions are configured using the 'sensor-group' with 'on-change' keyword, not 'update-policy'.
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 350-401 NAT questions on configuration and troubleshooting.
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Model-Driven Telemetry — study guide chapter
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FAQ
Questions learners often ask
What does this 350-401 question test?
Model-Driven Telemetry — This question tests Model-Driven Telemetry — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The 'telemetry' command enters the telemetry configuration submode, where subscriptions and sensor groups are defined. — On IOS-XE, telemetry is configured under the 'telemetry' submode. A subscription defines the destination (e.g., IP, port, protocol) and the sensor paths (YANG paths). Multiple sensor groups can be associated with one subscription. The 'update-policy' command sets the periodic interval. The 'receiver' command specifies the collector details. TLS is supported for secure dial-out connections.
What should I do if I get this 350-401 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 350-401 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 18, 2026
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