KCNA Cloud Native Observability Practice Question
Which component of the OpenTelemetry architecture is responsible for receiving data from instrumented applications and processing it before export?
⚠ Common exam trap
The trap is confusing the SDK (in-app instrumentation) with the Collector (out-of-process receiver/processor/exporter) — the question specifically asks about receiving and processing data from applications.
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
✓
OpenTelemetry Collector
The OpenTelemetry Collector is a vendor-agnostic component that receives telemetry (traces, metrics, logs) from instrumented applications via receivers, processes it (batching, filtering, sampling, attribute enrichment), and exports it to one or more backends. It decouples applications from backend-specific exporters.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
OpenTelemetry SDK
Why it's wrong here
The SDK instruments the application.
- ✗
OpenTelemetry API
Why it's wrong here
The API provides interfaces for instrumentation.
- ✓
OpenTelemetry Collector
Why this is correct
The OpenTelemetry Collector receives telemetry from instrumented applications via OTLP receivers, then processes it through configurable processors before exporting to backends. This satisfies the stem's requirement for a component that both receives and processes data, unlike SDKs, which only generate and emit telemetry from within the application process itself.
- ✗
OpenTelemetry exporter
Why it's wrong here
The exporter only serialises and transmits already-processed telemetry to a backend; it performs no receiving or pipeline processing. It tempts because export is the final visible step, but the collector is the component that receives data from instrumented applications and runs processors before export.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CNCF exam blueprint
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.