On the FusionInsight Manager interface, when a Kafka disk capacity shortage alarm is received, and the cause of the read alarm has been eliminated from the disk hardware failure, the system administrator needs to consider capacity expansion to solve this problem.

• A.True
• B.False

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Which of the following descriptions about the HBase storage model is correct?

• A.Even if there are multiple Key Values with the same key value and the same Qualifier, there may be more than one. In this case, the time stamp is used to distinguish
• B.KeyValuel has key information such as timestamp and type
• C.The same key value key is associated with multiple values
• D.Each Key Value has a Qualifier identifier

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Which of the following descriptions of the characteristics of Kafka Partition copies are correct? (Multiple choice)

• A.Follower synchronizes data from Leader by pulling
• B.Replicas are based on partitions. Each partition has its own master copy and slave copy
• C.The master copy is called Leader, and the slave copy is called Follower
• D.Both consumers and producers read and write data from Leader, and can also directly interact with Follower

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The figure below shows the configuration of HDFS tiered storage. If the number of copies of a block is 4. Which of the following statements is wrong?

• A.If the first block copy is written to RAM_If DISK fails, try to write to the storage type specified by "Alternative Storage Policy"
• B.The first block copy will be written to RAM_DISK, the rest of the replicas are written to DISK
• C.If it is a copy other than the first copy that fails to write, try to write to the storage type specified by "Alternative storage policy for copy"
• D.All 4 blocks will be written to RAM_DISK

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HDFSmiddle,piece(BlocThe size of k) is much larger than the smallest singleYuan,can be minimalchangeSearchingsiteout of the box.

• A.TRUE
• B.FALSE

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