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Simplifying data pipelines with Apache Kafka Cognitive Class Exam Answers

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Simplyfying Data pipelines using Apache cognitive class answers

Simplifying data pipelines with Apache Kafka Cognitive Class Exam Answers

Simplifying data pipelines with Apache Kafka

Module 1: Introduction to Apache Kafka

Question 1 :Which of the following are a Kafka use case?

  • Messaging
  • All of the above
  • Stream Processing
  • Website Activity Tracking
  • Log Aggregation

Question 2 : A Kafka cluster is comprised of one or more servers which are called “producers”

  • True
  • False

Question 3 : Kafka requires Apache ZooKeeper

  • True
  • False

Module 2: Kafka Command Line

Question 1 :There are two ways to create a topic in Kafka, by enabling the auto.create.topics.enable property and by using the kafka-topics.sh script.

  • True
  • False

Question 2 :Which of the following is NOT returned when –describe is passed to kafka-topics.sh?

  • Configs
  • None of the Above
  • PartitionNumber
  • ReplicationFactor
  • Topic

Question 3 :Topic deletion is disabled by default.

  • True
  • False

Module 3: Kafka Producer Java API

Question 1 :The setting of ack that provides the strongest guarantee is ack=1

  • True
  • False

Question 2 :The KafkaProducer is the client that publishes records to the Kafka cluster.

  • True
  • False

Question 3 : Which of the following is not a Producer configuration setting?

  • batch.size
  • linger.ms
  • key.serializer
  • retries
  • None of the above

Module 4: Kafka Consumer Java API

Question 1 :The Kafka consumer handles various things behind the scenes, such as:

  • Failures of servers in the Kafka cluster
  • Adapts as partitions of data it fetches migrates within the cluster
  • Data management and storage into databases
  • and b) only
  • All of the Above

Question 2 : If enable.auto.commit is set to false, then committing offsets is done manually, which provides gives you more control.

  • True
  • False

Question 3 : Rebalancing is a process where group of consumer instances within a consumer group, coordinate to own mutally shared sets of partitions of topics that the groups are subscribed to.

  • True
  • False

Module 5: Kafka Connect and Spark Streaming

Question 1 :Which of the following are Kafka Connect features?

A common framework for Kafka connectors

  • Automatic offset management
  • REST interface
  • Streaming/batch integration
  • All of the above

Question 2 :Kafka Connector has two types of worker nodes called standalone mode and centralized mode cluster

  • True
  • False

Question 3 : Spark periodically queries Kafka to get the latest offsets in each topic and partition that it is interested in consuming form.

  • True
  • False

Final Exam

If the auto.create.topics.enable property is set to false and you try to write a topic that doesn’t yet exist, a new topic will be created.

  • True
  • False

Which of the following is false about Kafka Connect?

  • Kafka Connect makes building and managing stream data pipelines easier
  • Kafka Connect simplifies adoption of connectors for stream data integration
  • It is a framework for small scale, asynchronous stream data integration
  • None of the above

Kafka comes packaged with a command line client that you can use as a producer.

  • True
  • False

Kafka Connect worker processes work autonomously to distribute work and provide scalability with fault tolerance to the system.

  • True
  • False

What are the three Spark/Kafka direct approach benefits? (Place the answers in alphabetical order.)

Kafka Consumer is thread safe, as it can give each thread its own consumer instance

  • True
  • False

What other open source producers can be used to code producer logic?

  • Java
  • Python
  • C++
  • All of the above

If you set acks=1 in a Producer, it means that the leader will write the received message to the local log and respond after waiting for full acknowledgement from all of its followers.

  • True
  • False

Kafka has a cluster-centric design which offers strong durability and fault-tolerance guarantees.

  • True
  • False

Which of the following values of ack will not wait for any acknowledgement from the server?

  • all
  • 0
  • 1
  • -1

A Kafka cluster is comprised of one or more servers which are called “Producers”

  • True
  • False

What are In Sync Replicas?

  • They are a set of replicas that are not active and are delayed behind the leader
  • They are a set of replicas that are not active and are fully caught up with the leader
  • They are a set of replicas that are alive and are fully caught up with the leader
  • They are a set of replicas that are alive and are delayed behind the leader

In many use cases, you see Kafka used to feed streaming data into Spark Streaming

  • True
  • False

All Kafka Connect sources and sinks map to united streams of records

  • True
  • False

Which is false about the KafkaProducer send method?

  • The send method returns a Future for the RecordMetadata that will be assigned to a record
  • All writes are asynchronous by default
  • It is not possible to make asynchronous writes
  • Method returns immediately once record has been stored in buffer of records waiting to be sent

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