200-901 Understanding and Using APIs Practice Question
A developer is using gRPC/gNMI for model-driven telemetry from a Cisco device. Which of the following best describes the difference between dial-in and dial-out streaming?
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
✓
Dial-in is initiated by the collector; dial-out is initiated by the device.
In gNMI, dial-in is when the collector initiates the subscription to the device; dial-out is when the device pushes data to the collector.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Dial-in uses gNMI; dial-out uses NETCONF.
Why it's wrong here
Both use gNMI.
- ✗
Dial-in uses TCP; dial-out uses UDP.
Why it's wrong here
Both use TCP.
- ✗
Dial-in is initiated by the network device; dial-out is initiated by the collector.
Why it's wrong here
Opposite: dial-in is collector-initiated.
- ✓
Dial-in is initiated by the collector; dial-out is initiated by the device.
Why this is correct
Correct: dial-in subscription from collector; dial-out is device pushing.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 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 200-901 exam.