KCNA Cloud Native Observability Practice Question
Which TWO of the following are common log aggregation tools used in Kubernetes environments? (Select two)
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
✓
Fluentd
Fluentd and Fluent Bit are both popular log aggregators and forwarders in Kubernetes. Loki is a log storage system, not an aggregator.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Loki
Why it's wrong here
Loki is a log storage system, not an aggregator.
- ✓
Fluentd
Why this is correct
Fluentd is a widely used log collector and forwarder.
- ✗
Prometheus
Why it's wrong here
Prometheus is for metrics.
- ✗
Jaeger
Why it's wrong here
Jaeger is for tracing.
- ✓
Fluent Bit
Why this is correct
Fluent Bit is a lightweight alternative to Fluentd for log forwarding.
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Same concept, more angles
2 more ways this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which tool is commonly used for log aggregation in Kubernetes and is designed to be lightweight?
easy- ✓ A.Fluent Bit
- B.Jaeger
- C.Prometheus
- D.Grafana
Why A: Fluent Bit is a lightweight log processor and forwarder, often used as a DaemonSet to collect logs.
Variation 2. Which log aggregation tool is designed specifically for Kubernetes and is often used as a lightweight alternative to Fluentd?
medium- A.Logstash
- ✓ B.Fluent Bit
- C.Loki
- D.Elasticsearch
Why B: Fluent Bit is a lightweight log processor and forwarder, often used in Kubernetes.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.