Quick Answer
The correct answer is gRPC, which is a valid transport protocol for model-driven telemetry receivers on Cisco IOS-XE. This is because gRPC, or Google Remote Procedure Call, uses HTTP/2 as its underlying transport, enabling efficient, bidirectional streaming of structured telemetry data in a push model—ideal for real-time network monitoring. On the ENCOR 350-401 exam, this topic tests your understanding of how model-driven telemetry differs from legacy polling methods, and you must distinguish between transport protocols (like gRPC and gNMI) and encoding formats (like JSON or Protocol Buffers). A common trap is confusing gRPC with gNMI: while gNMI is a network management interface that can use gRPC as its transport, gRPC itself is the transport protocol for the receiver. To remember, think “gRPC rides on HTTP/2” and that it’s the pipe, not the payload.
This 350-401 practice question tests your understanding of model-driven telemetry. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 of the following is a valid transport protocol for model-driven telemetry receivers on Cisco IOS-XE?
HTTP
Why wrong: HTTP is not a standard telemetry transport; gRPC uses HTTP/2 but is configured as gRPC.
gRPC
gRPC is a commonly used transport for model-driven telemetry.
FTP
Why wrong: FTP is not used for telemetry streaming.
SNMP
Why wrong: SNMP is a different protocol, not used for model-driven telemetry subscriptions.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
gRPC
gRPC is a supported transport protocol for telemetry receivers, along with gNMI and others.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
HTTP
Why it's wrong here
HTTP is not a standard telemetry transport; gRPC uses HTTP/2 but is configured as gRPC.
gRPC
Why this is correct
gRPC is a commonly used transport for model-driven telemetry.
Related concept
Read the scenario before looking for a memorised answer.
FTP
Why it's wrong here
FTP is not used for telemetry streaming.
SNMP
Why it's wrong here
SNMP is a different protocol, not used for model-driven telemetry subscriptions.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Model-Driven Telemetry — This question tests Model-Driven Telemetry — Read the scenario before looking for a memorised answer..
The correct answer is: gRPC — gRPC is a supported transport protocol for telemetry receivers, along with gNMI and others.
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 18, 2026
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.
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