CCDAK無料問題集「Confluent Certified Developer for Apache Kafka Certification Examination」

質問 1

To prevent network-induced duplicates when producing to Kafka, I should use

（A）max.in.flight.requests.per.connection=1

（B）retries=200000

（C）enable.idempotence=true

（D）batch.size=1

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

What isn't an internal Kafka Connect topic?

（A）connect-status

（B）connect-configs

（C）connect-offsets

（D）connect-jars

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

Your producer is producing at a very high rate and the batches are completely full each time. How can you improve the producer throughput? (select two)

（A）Increase batch.size

（B）Decrease linger.ms

（C）Enable compression

（D）Disable compression

（E）Decrease batch.size

（F）Increase linger.ms

正解：A、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

You want to perform table lookups against a KTable everytime a new record is received from the KStream.
What is the output of KStream-KTable join?

（A）You choose between KStream or KTable

（B）GlobalKTable

（C）Kstream

（D）KTable

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

Partition leader election is done by

（A）The consumers

（B）Vote amongst the brokers

（C）The Kafka Broker that is the Controller

（D）Zookeeper

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

A kafka topic has a replication factor of 3 and min.insync.replicas setting of 2. How many brokers can go down before a producer with acks=all can't produce?

（A）3

（B）1

（C）2

（D）0

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

Which of the following is true regarding thread safety in the Java Kafka Clients?

（A）One Producer can be safely used in multiple threads

（B）One Producer needs to be run in one thread

（C）One Consumer needs to run in one thread

（D）One Consumer can be safely used in multiple threads

正解：A、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 8

A consumer has auto.offset.reset=latest, and the topic partition currently has data for offsets going from 45 to
2311. The consumer group never committed offsets for the topic before. Where will the consumer read from?

（A）offset 2311

（B）offset 0

（C）offset 45

（D）it will crash

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 9

You have a Kafka client application that has real-time processing requirements.
Which Kafka metric should you monitor?

（A）Total time to serve requests to replica followers

（B）Consumer lag between brokers and consumers

（C）Consumer heartbeat rate to group coordinator

（D）Aggregate incoming byte rate

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

You are sending messages with keys to a topic. To increase throughput, you decide to increase the number of partitions of the topic. Select all that apply.

（A）Old records will stay in their partitions

（B）New records with the same key will get written to the partition where old records with that key were written

（C）New records may get written to a different partition

（D）All the existing records will get rebalanced among the partitions to balance load

正解：A、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 11

What data format isn't natively available with the Confluent REST Proxy?

（A）protobuf

（B）json

（C）binary

（D）avro

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 12

You have a Kafka cluster and all the topics have a replication factor of 3. One intern at your company stopped a broker, and accidentally deleted all the data of that broker on the disk. What will happen if the broker is restarted?

（A）The broker will crash

（B）The broker will start, and won't be online until all the data it needs to have is replicated from other leaders

（C）The broker will start, and won't have any data. If the broker comes leader, we have a data loss

（D）The broker will start, and other topics will also be deleted as the broker data on the disk got deleted

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 13

When using the Confluent Kafka Distribution, where does the schema registry reside?

（A）As an in-memory plugin on your Kafka Brokers

（B）As an in-memory plugin on your Zookeeper cluster

（C）As a separate JVM component

（D）As an in-memory plugin on your Kafka Connect Workers

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 14

Which topic stores the sink connector offsets?

（A）_consumer_offset

（B）Topic name from offset.storage.topic

（C）Topic name from config.storage.topic

（D）Topic name from status.storage.topic

正解：B 解答を投票する

質問 15

What are two examples of performance metrics?
(Select two.)

（A）total-login-attempts

（B）fetch-rate

（C）Number of active users

（D）Number of active user sessions

（E）incoming-byte-rate

（F）Time of last failed login

正解：B、E 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 16

Your manager would like to have topic availability over consistency. Which setting do you need to change in order to enable that?

（A）unclean.leader.election.enable

（B）compression.type

（C）min.insync.replicas

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 17

I am producing Avro data on my Kafka cluster that is integrated with the Confluent Schema Registry. After a schema change that is incompatible, I know my data will be rejected. Which component will reject the data?

（A）The Kafka Producer itself

（B）The Confluent Schema Registry

（C）The Kafka Broker

（D）Zookeeper

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 18

A consumer sends a request to commit offset 2000. There is a temporary communication problem, so the broker never gets the request and therefore never responds. Meanwhile, the consumer processed another batch and successfully committed offset 3000. What should you do?

（A）Nothing

（B）Use the kafka-consumer-group command to manually commit the offsets 2000 for the consumer group

（C）Restart the consumer

（D）Add a new consumer to the group

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 19

In the Kafka consumer metrics it is observed that fetch-rate is very high and each fetch is small. What steps will you take to increase throughput?

（A）Increase fetch.min.bytes

（B）Increase fetch.max.bytes

（C）Increase fetch.max.wait

（D）Decrease fetch.max.bytes

（E）Decrease fetch.min.bytes

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

CCDAK 無料問題集「Confluent Certified Developer for Apache Kafka Certification Examination」

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