The video tutorial explains Kafka consumer groups, focusing on listing, describing, and managing them. It covers how to identify consumer group lag and resolve it by catching up on messages. The tutorial also demonstrates how to identify active consumers and provides practical examples using Kafka commands.

What is the primary purpose of the Kafka consumer groups command?

• To manage Kafka topics

• To configure Kafka brokers

• To monitor Kafka producer performance

• To list, describe, delete, or reset consumer group offsets

What happens when you use the console consumer without specifying a group?

• It fails to start the consumer

• It generates a random console consumer group

• It uses the default consumer group

• It merges with an existing consumer group

What does a lag of zero indicate in a Kafka consumer group?

• The consumer is reading from multiple partitions

• The consumer is not connected

• The consumer has read all available data

• The consumer is behind in processing messages

How can you verify if a consumer group is lagging?

• By checking the number of partitions

• By listing all consumer groups

• By resetting the consumer group offsets

• By comparing the current offset with the lag end offset

What information can you obtain about an active consumer in a Kafka consumer group?

• The consumer ID and host information

• The configuration of the Kafka broker

• The number of topics it is consuming

• The total number of messages processed