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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Schema Management | 5-10% | - Avro Schemas - Protobuf and JSON Schemas - Schema Registration and Retrieval - Schema Registry Architecture - Schema Evolution and Compatibility |
| Topic 2: Security | 5-10% | - Authentication (SASL, SSL/TLS) - Encryption in Transit - Securing Schema Registry - Authorization (ACLs) |
| Topic 3: Developing with Kafka Consumers | 15-20% | - Commit Strategies (Auto, Manual, Cooperative) - Multi-threaded Consumers - Offset Management - Consumer Configuration and Tuning - Consumer Groups and Rebalancing - Deserialization - Consumer Interceptors |
| Topic 4: Kafka Connect | 10-15% | - Offset Management in Connect - Connect Architecture (Workers, Connectors, Tasks) - Converters and Transforms - Connector Configuration - Single Message Transformations (SMT) - Source and Sink Connectors |
| Topic 5: Developing with Kafka Producers | 15-20% | - Partitioning Strategies - Idempotent Producers - Producer Interceptors - Exactly-Once Semantics - Serialization (JSON, Avro, Protobuf) - Producer Configuration and Tuning - Error Handling and Retry Logic |
| Topic 6: Kafka Streams | 20-25% | - Interactive Queries - State Stores and Processors - Transformation Operations (map, filter, join, aggregate) - Testing Kafka Streams Applications - Exactly-Once Processing - Streams Architecture and Topology - Windowed Operations (Tumbling, Hopping, Session) |
| Topic 7: Kafka Fundamentals | 10-15% | - Brokers and Clusters - Producer and Consumer Basics - Replication Factor and ISR - Topics, Partitions, and Offsets - Log Segments and Retention |
| Topic 8: Installing and Configuring Kafka | 5-10% | - Partition Assignment Strategies - ZooKeeper vs KRaft Mode - Topic Creation and Configuration - Broker Configuration Parameters |
| Topic 9: Monitoring and Operations | 5-10% | - Disaster Recovery - Cross-region Replication - Consumer Lag and Health Checks - Log Compaction - Kafka Metrics and Monitoring |
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NEW QUESTION # 37
How much should be the heap size of a broker in a production setup on a machine with 256 GB of RAM, in PLAINTEXT mode?
Answer: C
Explanation:
In Kafka, a small heap size is needed, while the rest of the RAM goes automatically to the page cache (managed by the OS). The heap size goes slightly up if you need to enable SSL
NEW QUESTION # 38
In Kafka Streams, by what value are internal topics prefixed by?
Answer: C
Explanation:
In Kafka Streams, the application.id is also the underlying group.id for your consumers, and the prefix for all internal topics (repartition and state)
NEW QUESTION # 39
How will you read all the messages from a topic in your KSQL query?
Answer: C
Explanation:
Consumers can set auto.offset.reset property to earliest to start consuming from beginning. For KSQL, SET 'auto.offset.reset'='earliest';
NEW QUESTION # 40
Which two statements are correct when assigning partitions to the consumers in a consumer group using the assign() API?
(Select two.)
Answer: B,C
Explanation:
Using assign() givesmanual controlover partition assignment. In this mode:
* B is true: The applicationchooses partitionsdirectly without involving the group coordinator.
* C is true: Since no group coordination occurs,no rebalancinghappens if a consumer dies.
FromKafka Consumer API Docs:
"assign() manually assigns a list of partitions to this consumer. No coordination takes place and no rebalancing is triggered."
* A is false: subscribe() and assign() aremutually exclusive.
* D is incorrect: Partitions don't need to be equal across topics.
Reference:Kafka Consumer Java API > assign() and subscribe()
NEW QUESTION # 41
You have a Kafka consumer in production actively reading from a critical topic.
You need to update the offset of your consumer to start reading from the beginning of the topic.
Which action should you take?
Answer: C
Explanation:
To reset offsets for an existing consumer group, you must use the kafka-consumer-groups.sh tool with the -- reset-offsets and --to-earliest flags.
From Kafka Consumer Group Tool Documentation:
"You can use the kafka-consumer-groups tool to reset offsets for a consumer group. This is required if the consumer has already committed offsets." Setting auto.offset.reset=earliest only works if no committed offset exists.
Starting a new consumer with the same group won't reset offsets.
Retention settings don't affect committed offsets.
Reference: Kafka Consumer Group CLI Tool
NEW QUESTION # 42
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