350-501 Automation and Quality of Service Practice Question
Which TWO statements about model-driven telemetry compared to SNMP are correct? (Choose two.)
⚠ Common exam trap
Cisco often tests the misconception that model-driven telemetry is purely event-driven, but it supports periodic streaming as a primary mode, and candidates confuse the transport protocol (UDP vs. TCP) because SNMP uses UDP by default.
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
✓
Model-driven telemetry can stream data at sub-second intervals.
Model-driven telemetry (MDT) uses a push model where the network device streams structured data (e.g., YANG-modeled) to a collector, enabling sub-second intervals for real-time monitoring. This contrasts with SNMP's pull model, where the manager polls the device at intervals limited by CPU and network overhead, making sub-second polling impractical.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Model-driven telemetry uses UDP for transport by default.
Why it's wrong here
Typically uses TCP; gRPC or SSL.
- ✓
Model-driven telemetry can stream data at sub-second intervals.
Why this is correct
Correct: Telemetry supports high-frequency streaming.
- ✓
Model-driven telemetry uses a push model while SNMP primarily uses a pull model.
Why this is correct
Correct: Telemetry pushes data; SNMP is poll-based.
- ✗
Model-driven telemetry only sends data on change (event-driven).
Why it's wrong here
It supports both periodic and on-change; not only on-change.
- ✗
Model-driven telemetry uses MIBs to define data structures.
Why it's wrong here
MIBs are SNMP; telemetry uses YANG.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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