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CCNP Practice Question: Which three statements about telemetry data…
Which three statements about telemetry data collection intervals and on-change notifications 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
✓
Periodic telemetry sends data at a configured interval regardless of whether the value has changed.
Periodic telemetry sends data at fixed intervals, while on-change sends data only when a value changes. On-change reduces bandwidth but may miss transient events if suppression is used. Periodic ensures regular updates but increases load. Both can be combined in a single subscription. On-change is not always supported for all YANG paths.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Periodic telemetry sends data at a configured interval regardless of whether the value has changed.
Why this is correct
Correct because periodic subscriptions push data on a timer, ensuring consistent updates.
- ✓
On-change telemetry sends data only when the monitored value changes, reducing network overhead.
Why this is correct
Correct because on-change minimizes unnecessary data transmission.
- ✓
A single telemetry subscription can include both periodic and on-change sensors.
Why this is correct
Correct because Cisco IOS-XE and NX-OS allow mixing sensor paths with different update policies.
- ✗
On-change telemetry guarantees that every change, no matter how brief, will be reported.
Why it's wrong here
Incorrect because on-change may use suppression timers to avoid flooding, potentially missing very short-lived changes.
- ✗
Periodic telemetry is always preferred over on-change for all use cases.
Why it's wrong here
Incorrect because on-change is better for event-driven monitoring and bandwidth efficiency.
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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.