Replication factor in Kafka - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the replication factor to 3 when creating a Kafka topic.

Kafka

kafka-topics --create --topic my-topic --partitions 1 --replication-factor [1] --bootstrap-server localhost:9092

Drag options to blanks, or click blank then click option'

A1

B3

C0

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting replication factor to 0 causes an error.

Using replication factor 1 means no replication.

The replication factor defines how many copies of the data are kept across Kafka brokers. Setting it to 3 means the data is replicated on 3 brokers.

2fill in blank

medium

Complete the code to describe the replication factor of the topic named 'orders'.

Kafka

kafka-topics --describe --topic orders --bootstrap-server localhost:9092 | grep ReplicationFactor:[1]

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A3

B1

C2

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 or 1 will not show the expected replication factor.

Confusing partition count with replication factor.

The command filters the topic description to show lines with replication factor 3, which is common for production topics.

3fill in blank

hard

Fix the error in the command to create a topic with replication factor 2.

Kafka

kafka-topics --create --topic test-topic --partitions 3 --replication-factor [1] --bootstrap-server localhost:9092

Drag options to blanks, or click blank then click option'

A2

B4

C0

D-1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 or negative numbers causes errors.

Setting replication factor higher than broker count causes errors.

Replication factor must be a positive integer and cannot exceed the number of brokers. 2 is valid if you have at least 2 brokers.

4fill in blank

hard

Fill both blanks to create a topic with 4 partitions and replication factor 3.

Kafka

kafka-topics --create --topic logs --partitions [1] --replication-factor [2] --bootstrap-server localhost:9092

Drag options to blanks, or click blank then click option'

A4

B3

C2

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up partitions and replication factor values.

Using replication factor higher than available brokers.

The topic 'logs' is created with 4 partitions and a replication factor of 3 for good parallelism and fault tolerance.

5fill in blank

hard

Fill all three blanks to create a topic with replication factor 2, 5 partitions, and bootstrap server at localhost:9093.

Kafka

kafka-topics --create --topic metrics --partitions [1] --replication-factor [2] --bootstrap-server [3]

Drag options to blanks, or click blank then click option'

A5

B2

Clocalhost:9093

Dlocalhost:9092

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong port for bootstrap server.

Confusing partitions with replication factor.

This command creates the 'metrics' topic with 5 partitions, replication factor 2, and connects to the Kafka server at localhost:9093.