- A
Configure SNMPv2c with community strings and polling every 30 seconds.
Why wrong: SNMPv2c uses community strings in plain text, lacks encryption, and polling every 30 seconds cannot provide high-frequency, low-latency data.
- B
Implement streaming telemetry using gRPC with TLS and YANG data models.
Streaming telemetry pushes data at high frequency with low latency, supports custom fields via YANG models, and can be secured with TLS encryption and authentication.
- C
Deploy NetFlow v9 with custom flow records and SNMPv3 for encryption.
Why wrong: NetFlow v9 is pull-based (or export-based but not real-time push), and SNMPv3 encryption does not apply to NetFlow data; the combination does not provide high-frequency streaming.
- D
Use IPFIX with UDP export and add authentication via MD5 hashing.
Why wrong: IPFIX typically uses UDP, which lacks built-in encryption; MD5 hashing provides integrity but not encryption or authentication for the data stream.
Streaming Telemetry: gRPC, TLS, and YANG for Network Monitoring
This 200-301 practice question tests your understanding of ai and network operations. 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.
A network engineer is evaluating monitoring technologies for a large enterprise network that requires high-frequency, low-latency traffic data collection with support for custom fields. The solution must also support encryption and authentication to prevent tampering. Which technology best meets these requirements?
Quick Answer
The correct answer is streaming telemetry using gRPC with TLS and YANG data models because it uniquely satisfies all three requirements: high-frequency, low-latency push-based data collection, support for custom fields via YANG models, and encrypted, authenticated transport through TLS. Unlike traditional SNMP polling, which introduces latency and lacks native encryption, streaming telemetry continuously pushes structured data from network devices to a collector, enabling real-time monitoring at scale. On the CCNA 200-301 v2 exam, this question tests your understanding of modern monitoring versus legacy polling—a common trap is choosing SNMP traps, which are event-driven but unencrypted and lack custom field flexibility. Remember the mnemonic “gRPC PUSHES YANG over TLS” to recall that gRPC provides the push mechanism, YANG defines the custom data models, and TLS secures the channel.
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
Implement streaming telemetry using gRPC with TLS and YANG data models.
Streaming telemetry using gRPC with TLS and YANG data models is correct because it provides high-frequency, low-latency push-based data collection, supports custom fields via YANG models, and ensures encryption and authentication through TLS. This meets all the requirements, unlike polling-based or unencrypted alternatives.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure SNMPv2c with community strings and polling every 30 seconds.
Why it's wrong here
SNMPv2c uses community strings in plain text, lacks encryption, and polling every 30 seconds cannot provide high-frequency, low-latency data.
- ✓
Implement streaming telemetry using gRPC with TLS and YANG data models.
Why this is correct
Streaming telemetry pushes data at high frequency with low latency, supports custom fields via YANG models, and can be secured with TLS encryption and authentication.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Deploy NetFlow v9 with custom flow records and SNMPv3 for encryption.
Why it's wrong here
NetFlow v9 is pull-based (or export-based but not real-time push), and SNMPv3 encryption does not apply to NetFlow data; the combination does not provide high-frequency streaming.
- ✗
Use IPFIX with UDP export and add authentication via MD5 hashing.
Why it's wrong here
IPFIX typically uses UDP, which lacks built-in encryption; MD5 hashing provides integrity but not encryption or authentication for the data stream.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Implement streaming telemetry using gRPC with TLS and YANG data models.Correct answer▾
Why this is correct
Streaming telemetry pushes data at high frequency with low latency, supports custom fields via YANG models, and can be secured with TLS encryption and authentication.
✗Configure SNMPv2c with community strings and polling every 30 seconds.Wrong answer — click to see why▾
Why this is wrong here
SNMPv2c uses community strings transmitted in plain text, lacking encryption and authentication. Polling every 30 seconds is low-frequency and cannot provide high-frequency, low-latency data collection required for real-time monitoring.
Why candidates choose this
Students may confuse SNMP polling with streaming telemetry, thinking that frequent polling can achieve similar results, but polling introduces latency and overhead, and SNMPv2c lacks security.
✗Deploy NetFlow v9 with custom flow records and SNMPv3 for encryption.Wrong answer — click to see why▾
Why this is wrong here
NetFlow v9 is export-based and not a real-time push mechanism; it typically sends data in batches, introducing latency. SNMPv3 encryption does not apply to NetFlow data, so the combination does not provide secure, high-frequency streaming.
Why candidates choose this
NetFlow is a well-known monitoring technology, and students might think combining it with SNMPv3 adds security, but NetFlow itself does not support streaming telemetry's low-latency push model.
✗Use IPFIX with UDP export and add authentication via MD5 hashing.Wrong answer — click to see why▾
Why this is wrong here
IPFIX over UDP lacks built-in encryption, making data vulnerable to interception. MD5 hashing provides integrity but not encryption or authentication for the entire data stream, failing to meet the security requirements.
Why candidates choose this
IPFIX is an extension of NetFlow and supports custom fields, so students may assume it can be secured with hashing, but UDP transport and lack of encryption make it unsuitable for tamper-proof monitoring.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that SNMPv3 or NetFlow with custom records can provide both high-frequency push data and encryption, when in fact streaming telemetry with gRPC and TLS is the only solution that natively combines push-based collection, custom fields, and transport-layer security.
Detailed technical explanation
How to think about this question
gRPC uses HTTP/2 as its transport, enabling multiplexed streams and efficient bidirectional communication, which reduces latency compared to polling. YANG data models allow operators to define custom telemetry paths (e.g., interface counters, CPU metrics) that are pushed at subscription-based intervals, often as low as sub-second. In real-world deployments, this is critical for real-time analytics and anomaly detection in large-scale networks where SNMP polling would overwhelm the management plane.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-301 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
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FAQ
Questions learners often ask
What does this 200-301 question test?
AI and Network Operations — This question tests AI and Network Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement streaming telemetry using gRPC with TLS and YANG data models. — Streaming telemetry using gRPC with TLS and YANG data models is correct because it provides high-frequency, low-latency push-based data collection, supports custom fields via YANG models, and ensures encryption and authentication through TLS. This meets all the requirements, unlike polling-based or unencrypted alternatives.
What should I do if I get this 200-301 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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