CCDAK Prep
Kafka Producer/Consumer, Streams, Connect, Schema Registry, ksqlDB
900 Qs
Total questions
Practice + mock exams
3 certs
Supported exams
CCDAK + CCSD + CCAAK
JA & EN
Question & answer language
English / 日本語
100%
Explanation coverage
Every question has a detailed explanation
Why Nicheelab
Pass with questions aligned to Confluent's official Exam Guide
CCDAK covered
Full coverage of the Confluent Certified Developer exam scope
Bilingual questions & detailed explanations
900 questions in Japanese and English, grounded in the official Confluent/Apache Kafka documentation
Study in your spare time
See the explanation right after each question — study from 5 minutes during commutes or breaks
Accuracy tracking
Automatically tracks accuracy per category and visualizes weak areas in charts
Multi-device ready
Optimized layout for desktop, tablet, and mobile
Aligned with official docs
Explanations built from the official Confluent/Apache Kafka documentation
Supported exams
Confluent Certified Developer
CCDAK | 900 Qs
Confluent Kafka Streams Developer
CCSD | 900 Qs
Confluent Kafka Administrator
CCAAK | 900 QsPricing
Try for free
¥0
Sample the public problems
Paid Plan
¥980/mo · US$6.20
Full access to all Kafka practice + mock exams
Kafka Certification Study Guide
Articles to support your exam prep
Certification Overview
Where CCDAK & CCAAK fit and how to choose
CCDAK Exam Guide
Scope, weighting, registration, prep
CCAAK Exam Guide
Operations-focused questions and prep
Difficulty Comparison
Study time and difficulty: CCDAK vs CCAAK
Study Strategy Guide
How to use official docs and exercises
Sample Questions
Sample questions by major domain
Exam Cost Guide
Fees, vouchers, retake rules
Pass Stories
Test-day flow, tools, gotchas
Confluent Cloud Free Tier
Spinning up a learning cluster and hands-on
Career Value
Market value in the streaming space
Topics & Partitions
Core of distribution and scalability
Replicas & ISR
Fault tolerance and consistency design
Consumer Groups
Parallelism and group coordination
acks setting
Durability vs latency trade-off
Idempotent Producer
Deduplication mechanics
Exactly-Once
EOS guarantees: scope and conditions
Schema Registry
Schema evolution and compatibility
Avro Schemas
Field evolution and defaults
Kafka Connect
Source/Sink, distributed mode
Kafka Streams
When to use KStream vs KTable
ksqlDB
SQL-like stream processing
Compression Comparison
gzip/snappy/lz4/zstd
Monitoring & Metrics
JMX and broker observation points
Partition Assignor
Range/RoundRobin/Sticky
Study on your phone, too
Study efficiently in the Android app during your commute and spare moments.
Your progress syncs with the same account you use on the web.
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Pass your Kafka certifications with bilingual study resources
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