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?

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

Replication factor is too high

Incorrect topic names

Wrong compression settings

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?

log.cleanup.policy=delete with infinite retention

log.cleanup.policy=compact

max.message.bytes=1000000

min.insync.replicas=3 with acks=all

Question 3

Correct Answers: 1/4

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

Change the application.id

Reset the application's state and start from earliest offset

Increase the session timeout

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

Bytes-in rate

Log cleaner lag

Consumer lag

Producer request rate

Question 6

Correct Answers: 1/4

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

Increase partition count

Use event versioning with a monotonically increasing sequence

Add more consumers

Enable idempotency

Question 7

Correct Answers: 1/4

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

Increase heap size

Configure appropriate batch size and poll interval

Enable compression

Add more connectors

Question 8

Correct Answers: 1/4

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

Message compression

Transaction API with read_committed isolation

Higher replication factor

Larger partition count

Question 9

Correct Answers: 1/4

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

Too many stream threads

Unbounded state store without cleanup policy

High replication factor

Wrong serializer

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?

map

filter

flatMap

windowedBy with join

Question 11

Correct Answers: 1/4

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

request-latency-avg

batch-size-avg

record-queue-time-avg

records-per-request-avg

Question 12

Correct Answers: 1/4

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

Decrease max.poll.records

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

Decrease session timeout

Enable auto commit

Question 13

Correct Answers: 1/4

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

Network throughput between brokers

Consumer lag

Topic configuration

Producer batch size

Question 14

Correct Answers: 1/4

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

Wrong serialization format

Log compaction with too low retention time

High producer timeout

Insufficient partitions

Question 15

Correct Answers: 1/4

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

acks=1, replication.factor=3

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

acks=all, replication.factor=2

acks=0, replication.factor=5

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