最新のCCDAK問題集で試験を準備する

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Confluent Certified Developer for Apache Kafka Certification Examination 認定 CCDAK 試験問題：

1. (You are designing a stream pipeline to monitor the real-time location of GPS trackers, where historical location data is not required.
Each event has:
* Key: trackerId
* Value: latitude, longitude
You need to ensure that the latest location for each tracker is always retained in the Kafka topic.
Which topic configuration parameter should you set?)

A) retention.ms=infinite
B) retention.ms=0
C) min.cleanable.dirty.ratio=-1
D) cleanup.policy=compact

2. (You are implementing a Kafka Streams application to process financial transactions.
Each transaction must be processed exactly once to ensure accuracy.
The application reads from an input topic, performs computations, and writes results to an output topic.
During testing, you notice duplicate entries in the output topic, which violates the exactly-once processing requirement.
You need to ensure exactly-once semantics (EOS) for this Kafka Streams application.
Which step should you take?)

A) Set processing.guarantee=exactly_once_v2 in the Kafka Streams configuration.
B) Set enable.idempotence=true in the internal producer configuration of the Kafka Streams application.
C) Enable compaction on the output topic to handle duplicates.
D) Set enable.exactly_once=true in the Kafka Streams configuration.

3. You create a producer that writes messages about bank account transactions from tens of thousands of different customers into a topic.
Your consumers must process these messages with low latency and minimize consumer lag Processing takes ~6x longer than producing Transactions for each bank account must be processed in orderWhich strategy should you use?

A) Use the bank account number found in the message as the message key.
B) Use a combination of the bank account number and the transaction timestamp as the message key.
C) Use the timestamp of the message's arrival as its key.
D) Use a unique identifier such as a universally unique identifier (UUID) as the message key.

4. Match each configuration parameter with the correct option.
To answer choose a match for each option from the drop-down. Partial
credit is given for each correct answer.

5. Which two producer exceptions are examples of the class RetriableException? (Select two.)

A) RecordTooLargeException
B) LeaderNotAvailableException
C) AuthorizationException
D) NotEnoughReplicasException

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