Data Engineering Interview Prep
6
637
No official exam (interview preparation)
About 1 minute per question; the Exam Mode test is timed at 106 minutes
60% target score (no official pass mark)
Multiple choice (single and multiple answer)
SQL and Relational Database Fundamentals | Keys, constraints, joins, views, transactions and normalization (8%) Indexing and Query Performance | Clustered, covering and composite indexes, execution plans and tuning (4%) NoSQL and Distributed Systems | Document, key-value, wide-column and graph stores, CAP, consensus, sharding and replication (7%) Data Warehousing and Dimensional Modeling | Star and snowflake schemas, facts, conformed dimensions and slowly changing dimensions (6%) Data Modeling and ER Diagrams | Conceptual, logical and physical models, ERD notation, cardinality and modeling tools (10%) ETL, ELT and Data Integration | Extraction, CDC, incremental and bulk loading, transformation and tools such as NiFi and Talend (13%) Data Lakes and Lakehouse Architecture | Object storage, schema-on-read, medallion layers and lake governance (2%) Big Data Processing: Spark and Hadoop | Spark DataFrames, shuffles, caching and partitioning, HDFS, YARN, Hive and HBase (8%) Stream Processing and Messaging | Kafka topics, partitions and KRaft, Flink, Structured Streaming, watermarks and checkpoints (11%) Pipeline Orchestration, Monitoring and Reliability | Airflow DAGs and sensors, alerting, retries, backoff, idempotence and circuit breakers (10%) Data Quality | Profiling, cleansing, validation, deduplication and quality dimensions (11%) Data Governance, Security and Compliance | Lineage, metadata, stewardship, access control, encryption, GDPR and PCI DSS (10%)
Aspiring data engineers preparing for technical interviews Software developers and analysts moving into data engineering ETL and BI developers modernising their skills for Spark, Kafka and cloud platforms Experienced engineers brushing up before interview loops or promotions
Stream Processing and Messaging
In current versions of Apache Kafka, where are the committed offsets of a consumer group stored?
In ZooKeeper
In the internal __consumer_offsets topic on the brokers
In the producer that wrote the messages
On each consumer's local disk
B
Committed offsets are written by the group coordinator to the internal __consumer_offsets topic on the brokers. ZooKeeper-based offset storage is long obsolete, and Kafka 4.0 removed ZooKeeper entirely in favour of KRaft. Producers and individual consumer disks do not hold the group's committed position.
Updated 2026Instant accessLifetime access

Data Engineering Interview Practice Tests: 6 Practice Tests and 637 Questions

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About this course

These practice tests are for aspiring and working data engineers, developers and analysts preparing for data engineering job interviews and technical screenings. They are a quick way to find the gaps in your knowledge before the interview.

You get 6 practice tests with 106 to 107 questions each, 637 questions in total, including a timed Exam Mode test. Every question explains why the right answer is right and why the others are wrong, and each one is mapped to a topic area, from SQL, indexing and data modeling to ETL/ELT, Spark, Kafka, Flink, Airflow, data quality and governance. The series was rebuilt for 2026: every answer key was re-checked, duplicates were rewritten to test new angles, and outdated material was modernised, for example Kafka’s KRaft mode in place of ZooKeeper, cloud object storage and lakehouse layers for data lakes, and current Spark and Flink APIs.

What's included

practice exams

Exam-style questions that match the format, wording and difficulty of the real exam.

Practice and exam modes

Learn with instant feedback, or sit a timed exam under real conditions.

Explained answers

Every answer comes with the reasoning, so you learn from each miss.

Score reports

See your results by domain and find weak areas before exam day.

Unlimited retakes

Retake any exam as often as you like until your scores are consistent.

Works on any device

Study on your phone, tablet or laptop. No app to install.

Single test or All-Access Pass

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  • Explanations and score reports
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What learners say

4.5

2,074 reviews · 5,272 students

“Saved me hundreds”

$69 for all exams is a steal. I prepared for Scrum + ITIL® without buying separate courses.
Sarah M.Agile Coach

“Felt like the real PMP exam”

I cleared PMP® in the first attempt. The timed simulator and analytics made my weak areas obvious and fixable.
James K.Project Lead

“Score up 30% in 3 weeks”

Best part is the sheer volume of questions which can practice and improve your score every day and week.
Priya T.QA Lead

Questions before you buy

What do I get with a single practice test?
You get the practice test in practice and exam modes for the certification you choose: timed, exam-style questions with explanations. It's a good fit if you're preparing for one exam.
What are the next steps after payment?
Upon successful payment, our system immediately creates your account, adds the course to your account in our LMS and sends you a walk-through video guide. You will receive emails from [email protected].
Can I access the materials on mobile devices?
Absolutely. Our platform is fully responsive and works on all devices, including smartphones and tablets.
What if I'm not satisfied with the product?
We offer a 30-day money-back guarantee if you're not satisfied with our practice tests.
What is the 30-day money-back guarantee?
The refund request must be submitted within 30 days of purchase. If a user has requested multiple refunds for the same course or has a history of excessive refund requests, Gururo reserves the right to limit or deny future refund requests. Full conditions are in our refund policy.
Does the All-Access Pass cover all practice tests on Exametics?
Yes. The All-Access Certification Practice Tests pass includes lifetime access to 250+ exams, including Project Management, Cloud, DevOps, Cybersecurity, DB, AI, Linux, Development & Testing, Data Analytics and more. New practice tests are added regularly at no extra cost.
How is the practice test delivered?
Once you complete checkout, you get immediate access in our Learning Management System (LMS). You can monitor your progress, get scores automatically when you finish each quiz, take timed quizzes that simulate real test conditions, and review your results to find areas to improve.
What payment methods do you accept?
We accept major credit cards, including Visa, Mastercard, American Express and Discover, as well as PayPal. For payments in your local currency, please contact support at [email protected].
Are these real exam questions?
No. The questions are written to match the style, format and difficulty of the real exam. We don't use leaked or copied exam content.
Can I retake a single practice test?
Yes. You get unlimited attempts, so you can retake the test until your scores are consistent.
Are single practice tests updated when the exam changes?
We update tests when exam objectives change. How often varies by exam. The All-Access Pass includes updates for every exam.
How long do I have access?
Lifetime access on all the practice tests and packs.
Which should I choose, a single test or the All-Access Pass?
Buy a single test if you're preparing for one exam. Choose the All-Access Pass if you're studying for more than one exam, or if the exam you need costs close to the pass price. It also gives you every exam we add later.

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Data Engineering Interview Practice tests

Original price was: $30.Current price is: $10.

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  • Full-length, timed practice exams
  • Explanation for every answer
  • Score report by domain
  • Unlimited retakes, lifetime access
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