The capacity scheduler is performing resource allocation. The existing two queues Q1 and Q2 at the same level have a capacity of 30. Among them, Q1 has used 8 and Q2 has used 14, and the resource will be allocated to Q1 first.

• A.True
• B.False

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Which of the following functions can be achieved by the kafka-cluster mirroring tool?

• A.None of the above is correct
• B.Kafka single cluster data recovery
• C.Kafka single cluster data backup
• D.Kafka cluster data synchronization solution

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Kerberos can only provide security authentication for services within the cluster.

• A.True
• B.False

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If there are only Default, QueueA and QueueB sub-queues in the YARNU group, then their capacities are allowed to be set to 60%, 25%, and 22% respectively.

• A.False
• B.True

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Watermark is a mechanism proposed by Apache Flink to process EventTime window calculations, which is essentially a time stamp.

• A.True
• B.False

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