Huawei HCIP-Big Data Developer V2.0 認定 H13-723_V2.0 試験問題:

1. Which of the following causesHDFSofNameNodeEntersafemode(install"aroot form)? (multiple choice)

A) Lost copies exceed read value.
B) The number of missing blocks exceeds the read value.
C) Active and standbyNameNodeThe disk space where the metadata is located is insufficient.
D) The corrupted copy exceeds the threshold.

2. FusionInsight HDmiddle,HiveWhich of the following parameters of the client is used to controlreduceConcurrency? (multiple choice)

A) hive.exec.reducers.bytes.per.reducer
B) hive.exec.max.dynamic.partitions.pernode
C) hive.exec.reducers.max
D) hive.exec.max.dynamic.partitions

3. existSparkin, becauseDataFramethanRDDThe higher-level interface will have more calling levels. because Therefore, all based onDataFrameThe performance of the developed program will be higher than that based onRDDThe developed program has poor performance.

A) True
B) False

4. existFusionInsight HDcluster, aboutkinitOperation command, which of the following statements is wrong?
(multiple choice)

A) The ticket obtained by executing this command is intwenty fourIt will time out when it is small and needs to be executed againkinitcommand to log in again.
B) Only the machine account can be used.
C) A client does not support the simultaneous use of multiple accounts.
D) Only the HMI account can be used.

5. in aMapReduceapplication,mapThe output of the function is viaMapReduce? ?After processing, send toreduceletter number. This process belongs to? ?Sort and group pairs.

A) True
B) False

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