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Kafka Online Test

The Kafka Online Test uses scenario-based MCQs to evaluate candidates on their knowledge of Apache Kafka, including their proficiency in working with message queue, stream processing, and distributed systems. The test also evaluates a candidate's familiarity with Kafka producer and consumer workflows, partitioning and replication, and performance optimization. The test aims to evaluate a candidate's ability to work with Kafka effectively and design and develop scalable and fault-tolerant messaging systems that meet real-time data processing requirements.

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Screen candidates with a 40 mins test

Test duration:  ~ 40 mins
Difficulty level:  Moderate
Availability:  Available as custom test
Questions:
  • 15 Kafka MCQs
Covered skills:
Kafka Offsets
In-Synced Replica
Kafka Clusters
Distributed Systems
Event Streaming
Message Queues
Data Pipelines
Stream Processing
Fault Tolerance
Scalability
Data Replication
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Use the Kafka Test to shortlist qualified candidates

The Kafka Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Understanding and working with Kafka Offsets
  • Understanding and managing In-Synced Replica
  • Configuring and maintaining Kafka Clusters
  • Designing and implementing Distributed Systems using Kafka
  • Utilizing Event Streaming with Kafka
  • Working with Message Queues in Kafka
  • Building and maintaining Data Pipelines with Kafka
  • Implementing Stream Processing using Kafka
  • Ensuring Fault Tolerance in Kafka
  • Scaling Kafka for high-volume data
  • Understanding Data Replication in Kafka
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Screen candidates with the highest quality questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 15,000+ questions. The actual questions on this Kafka Online Test will be non-googleable.

🧐 Question

Medium

onCompletion method call
Solve
Do you know when the onCompletion() method is called?
 image

Easy

Topics and partitions
KStream
Partition
Solve
Our ecommerce website, Dove Bonito maintains two topics: 1 high volume topic, "purchase" with 5 partitions and 1 low volume topic "customer" with 3 partitions. The team wants to do a stream-table join of these topics. What would you recommend?

Medium

word-count-output
Solve
 image
What is an adequate topic configuration for the topic word-count-output?
🧐 Question🔧 Skill

Medium

onCompletion method call

2 mins

Kafka
Solve

Easy

Topics and partitions
KStream
Partition

2 mins

Kafka
Solve

Medium

word-count-output

2 mins

Kafka
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
onCompletion method call
Kafka
Medium2 mins
Solve
Topics and partitions
KStream
Partition
Kafka
Easy2 mins
Solve
word-count-output
Kafka
Medium2 mins
Solve

Test candidates on core Kafka Hiring Test topics

Kafka Offsets: Kafka Offsets refer to the unique identifier assigned to each message in a Kafka topic. They act as a pointer to the position of a specific message within a partition. Measuring this skill allows recruiters to assess the candidate's understanding of data persistence and message ordering in Kafka.

In-Synced Replica: An In-Synced Replica in Kafka is a replica that is synchronized with the leader replica for a particular partition. These replicas are considered in-good-state and are used for consistent and reliable message delivery. Measuring this skill helps recruiters evaluate the candidate's knowledge of replica synchronization, data consistency, and fault tolerance in Kafka.

Kafka Clusters: A Kafka Cluster consists of multiple Kafka Brokers working together to form a scalable and fault-tolerant messaging system. It provides high availability, fault tolerance, and horizontal scalability for handling large volumes of data streams. Measuring this skill enables recruiters to assess the candidate's understanding of cluster management, replication, and data distribution in Kafka.

Distributed Systems: A Distributed System is a collection of independent components that work together to achieve a common goal. In the context of Kafka, understanding distributed systems is crucial as Kafka is designed to handle large-scale event streams and distributed processing. Measuring this skill allows recruiters to evaluate the candidate's familiarity with distributed system concepts such as scalability, fault tolerance, and data consistency.

Event Streaming: Event Streaming involves the continuous and real-time processing of data events. In Kafka, events are represented as messages and are processed using Kafka's publish-subscribe model. Measuring this skill helps recruiters assess the candidate's knowledge of streaming data architectures, event-driven systems, and real-time data processing.

Message Queues: Message Queues provide a way to decouple producers and consumers in a distributed system. In Kafka, message queues are implemented as topics where messages are stored and can be consumed by multiple consumers. Measuring this skill allows recruiters to evaluate the candidate's understanding of message-oriented architectures, decoupling of components, and asynchronous communication patterns.

Data Pipelines: Data Pipelines are the systems and processes used to extract, transform, and load (ETL) data from various sources to a destination. In Kafka, data pipelines can be built using various components such as sources, connectors, and sinks. Measuring this skill enables recruiters to assess the candidate's knowledge of data ingestion, transformation, and streaming data integration using Kafka.

Stream Processing: Stream Processing involves the real-time computation and analysis of data streams. In Kafka, stream processing can be performed using Kafka Streams or other stream processing frameworks. Measuring this skill helps recruiters evaluate the candidate's familiarity with stream processing concepts, such as windowing, aggregation, and stateful processing, in the context of Kafka.

Fault Tolerance: Fault Tolerance refers to the ability of a system to continue functioning even in the presence of hardware failures, software errors, or other unexpected events. In Kafka, fault tolerance is achieved through data replication, leader election, and recovery mechanisms. Measuring this skill allows recruiters to assess the candidate's understanding of fault-tolerant architectures, error handling, and data durability in Kafka.

Scalability: Scalability is the ability of a system to handle increasing workloads by adding resources or scaling horizontally. In Kafka, scalability is achieved through partitioning, distributed processing, and parallelism. Measuring this skill enables recruiters to evaluate the candidate's knowledge of designing and managing scalable systems for handling high-throughput data streams in Kafka.

Data Replication: Data Replication is the process of creating and maintaining copies of data in multiple locations for redundancy and availability. In Kafka, data replication is used to ensure durability and fault tolerance. Measuring this skill allows recruiters to assess the candidate's understanding of replication strategies, consistency models, and data integrity in Kafka.

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We evaluated several of their competitors and found Adaface to be the most compelling. Great library of questions that are designed to test for fit rather than memorization of algorithms.

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Have questions about the Kafka Hiring Test?

How does pricing work?

You can check out our pricing plans.

Can I customize the test?

Yes, absolutely. Custom assessments are set up within 48 hours based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test. You can also customize a test by uploading your own questions.

Can I combine multiple skills into one test?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

What roles can I use the Kafka Test for?

Here are few roles for which we recommend this test:

  • Kafka Developer
  • Kafka Administrator
  • Senior Kafka Developer
Can I see a sample test, or do you have a free trial?

Yes!

The free trial includes one sample technical test (Java/ JavaScript) and one sample aptitude test that you will find in your dashboard when you sign up. You can use it to review the quality of questions and the candidate experience of giving a test on Adaface.

You can preview any of the 500+ tests and see the sample questions to decide if it would be a good fit for your requirements.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

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