QuizApi - Kafka Architecture & Troubleshooting Quiz

Question 1

Correct Answers: 1/4

In your multi-datacenter Kafka deployment, you notice messages appearing multiple times in the destination cluster. What's the likely configuration issue?

Wrong compression settings

Replication factor is too high

Incorrect topic names

MirrorMaker's consumer group.id is not unique per instance

Question 2

Correct Answers: 1/4

You're building a security audit system where every record must be preserved. Which Kafka configuration is most critical?

min.insync.replicas=3 with acks=all

log.cleanup.policy=compact

max.message.bytes=1000000

log.cleanup.policy=delete with infinite retention

Question 3

Correct Answers: 1/4

Your Kafka Streams application crashes when deploying a new version. What's the safest way to restart processing?

Use the same application.id but a new group.instance.id

Reset the application's state and start from earliest offset

Increase the session timeout

Change the application.id

Question 4

Correct Answers: 1/4

During a network partition, your Kafka cluster shows unusual leader elections. What's the correct min.insync.replicas setting to prevent data loss in a 5-broker cluster?

Question 5

Correct Answers: 1/4

Your Kafka cluster's disk usage suddenly spikes. Which metric should you check first?

Producer request rate

Log cleaner lag

Consumer lag

Bytes-in rate

Question 6

Correct Answers: 1/4

Your event-driven microservices occasionally process events out of order. Which pattern should you implement?

Enable idempotency

Use event versioning with a monotonically increasing sequence

Add more consumers

Increase partition count

Question 7

Correct Answers: 1/4

Your Kafka Connect source connector keeps failing with OOM errors. What's the best solution?

Add more connectors

Configure appropriate batch size and poll interval

Enable compression

Increase heap size

Question 8

Correct Answers: 1/4

In your CQRS application, read replicas lag behind write operations. Which Kafka feature would help?

Larger partition count

Transaction API with read_committed isolation

Higher replication factor

Message compression

Question 9

Correct Answers: 1/4

Your Kafka Streams application shows increasing memory usage over time. What's likely causing this?

Wrong serializer

Unbounded state store without cleanup policy

High replication factor

Too many stream threads

Question 10

Correct Answers: 1/4

Your real-time fraud detection system needs to correlate events within a 5-minute window. Which Kafka Streams operator is most appropriate?

windowedBy with join

filter

flatMap

map

Question 11

Correct Answers: 1/4

Your Kafka producers suddenly start showing high latency. Which metric should you check first?

records-per-request-avg

batch-size-avg

record-queue-time-avg

request-latency-avg

Question 12

Correct Answers: 1/4

Your clickstream analysis pipeline drops events during high traffic. How should you modify the consumer configuration?

Enable auto commit

Increase fetch.min.bytes and fetch.max.wait.ms

Decrease session timeout

Decrease max.poll.records

Question 13

Correct Answers: 1/4

Your Kafka cluster's under-replicated partitions spike during peak hours. What should you check first?

Producer batch size

Consumer lag

Topic configuration

Network throughput between brokers

Question 14

Correct Answers: 1/4

In your event sourcing system, some events are missing when rebuilding state. What's the likely cause?

Insufficient partitions

Log compaction with too low retention time

High producer timeout

Wrong serialization format

Question 15

Correct Answers: 1/4

Your mission-critical Kafka cluster needs the strongest possible durability guarantees. Which configuration combination is most appropriate?

acks=0, replication.factor=5

acks=all, min.insync.replicas=2, replication.factor=3, enable.idempotence=true

acks=all, replication.factor=2

acks=1, replication.factor=3

Question 1

In your multi-datacenter Kafka deployment, you notice messages appearing multiple times in the destination cluster. What's the likely configuration issue?

Question 2

You're building a security audit system where every record must be preserved. Which Kafka configuration is most critical?

Question 3

Your Kafka Streams application crashes when deploying a new version. What's the safest way to restart processing?

Question 4

During a network partition, your Kafka cluster shows unusual leader elections. What's the correct min.insync.replicas setting to prevent data loss in a 5-broker cluster?

Question 5

Your Kafka cluster's disk usage suddenly spikes. Which metric should you check first?

Question 6

Your event-driven microservices occasionally process events out of order. Which pattern should you implement?

Question 7

Your Kafka Connect source connector keeps failing with OOM errors. What's the best solution?

Question 8

In your CQRS application, read replicas lag behind write operations. Which Kafka feature would help?

Question 9

Your Kafka Streams application shows increasing memory usage over time. What's likely causing this?

Question 10

Your real-time fraud detection system needs to correlate events within a 5-minute window. Which Kafka Streams operator is most appropriate?

Question 11

Your Kafka producers suddenly start showing high latency. Which metric should you check first?

Question 12

Your clickstream analysis pipeline drops events during high traffic. How should you modify the consumer configuration?

Question 13

Your Kafka cluster's under-replicated partitions spike during peak hours. What should you check first?

Question 14

In your event sourcing system, some events are missing when rebuilding state. What's the likely cause?

Question 15

Your mission-critical Kafka cluster needs the strongest possible durability guarantees. Which configuration combination is most appropriate?

Finish Quiz