Apache Kafka Kafka Producers & Consumers

Question 1

Which producer configuration controls the maximum time (in ms) a producer will wait before sending a batch of records?

Accepted Answer

linger.ms

Answer

batch.size

Answer

acks

Answer

retries

Question 2

What does setting `acks=all` mean for a Kafka producer?

Accepted Answer

The producer waits for acknowledgment from all in-sync replicas

Answer

Only the leader acknowledges

Answer

No acknowledgment is required

Answer

Only followers acknowledge

Question 3

Which consumer configuration determines how frequently the consumer offsets are committed automatically?

Accepted Answer

auto.commit.interval.ms

Answer

fetch.min.bytes

Answer

max.poll.records

Answer

session.timeout.ms

Question 4

What is the purpose of the `max.poll.records` consumer configuration?

Accepted Answer

Limits the maximum number of records returned in a single poll() call

Answer

Sets the max partition count

Answer

Controls the fetch size in bytes

Answer

Defines the max lag allowed

Question 5

When a Kafka producer sends a message without a key, how is the partition selected?

Accepted Answer

Round-robin across available partitions

Answer

Always partition 0

Answer

Random single partition for the whole session

Answer

Based on timestamp

Question 6

Which setting must be enabled for a Kafka consumer to commit offsets automatically?

Accepted Answer

enable.auto.commit=true

Answer

auto.offset.reset=earliest

Answer

isolation.level=read_committed

Answer

fetch.wait.max.ms=500