HCIA-Big Data V3.0 (H13-711_V3.0-ENU) Free Practice Test

Question 1

DataSet from Spark2.0Officially enabled, it has the characteristics of both DataFrame and RDD, and RDD is no longer used.

A. FALSE

B. TRUE

Correct Answer: A

Question 2

If the physical memory utilization of some Containers exceeds the configured memory threshold, but the total memory utilization of all Containers does not exceed the set NodeManager1 memory threshold, then the Containert with excessive memory usage can still continue to run.

A. False

B. True

Correct Answer: B

Question 3

In Hadoop, if yarn.scheduler.capacity.root.Queue A.
minimum-user-limitpercent is set to 50, which of the following statements is wrong?

A. If there are already 2 user tasks running in QueueA, then the task submitted by the third user needs to wait for the release of resources.

B. Each user in QueueA can only get up to 50% of the resources.

C. QueueA must ensure that each user gets at least 50% of the resources.

D. A user submits a task and can use 100% of QueueA's resources.

Correct Answer: B

Question 4

There are currently 3 racks of a file that needs to be stored in 3 copies. Copy 1 and copy 2 are stored on the same rack as the client and on different servers. According to the HDFS replica placement strategy, it must be stored in other racks.

A. False

B. True

Correct Answer: A

Question 5

The process of OpenScanner in HBasel will create two different Scanners to read the data of HFile and MemStore. The Scanner corresponding to HFile is StoreFileScanner, and the Scanner corresponding to MemStore is MemStoreScanner.

A. False

B. True

Correct Answer: B

Question 6

In the flume architecture, a Source can be connected to multiple channels.

A. False

B. True

Correct Answer: B

Question 7

In the Fusioninsight product, which of the following descriptions are correct about the topic of creating Kafka?

A. all of the aboveA. True

B. Setting up multiple replicas can enhance the disaster tolerance of Kafka services

C. When creating TopicE of Kafkal, the number of Partitions must be set

D. When creating TopicE of Kafkal, the number of Partition copies must be set

Correct Answer: A,B,C,D

Question 8

AboutHDFSdataFinishIntegrity guarantee, which of the following mechanisms isMistakeof?

A. The snapshot mechanism implements the file systemas usualSee the snapshot mechanism to ensure that data can be recovered in time when misoperation occurs

B. DataNode to NameNode periodic reportFailTask,NameNodeinitiateviceThis rebuild action to restore lostcopy

C. The log mechanism is used to operate the metadata, and the metadata is stored on the active and standby NanoNodes.

D. SectionPoint higher performance DataNodemore data will be stored

Correct Answer: D

Question 9

In Fusioninsight HD, which of the following is not a flow control feature of Hive

A. Supports threshold control for the number of connections established by each user

B. Supports threshold control on the number of connections established by a specific user

C. Supports threshold control of the number of connections established per unit time

D. Supports threshold control for the total number of established connections

Correct Answer: A,C,D

Question 10

Flink is a computing framework that combines batch processing and stream processing. Its core is a stream data processing engine for data classification and parallel computing.

A. False

B. True

Correct Answer: B

Question 11

What are the types of znodes in Zookeeper?

A. sem1-persistent

B. ephemeral

C. persistent

D. temporary

Correct Answer: B,C

Question 12

RedisThe commands in are case-sensitive.

A. FALSE

B. TRUE

Correct Answer: A

Question 13

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

A. False

B. True

Correct Answer: A

Question 14

The smallest processing unit of HBase is Region, and the routing information between User Region and Regionserver is stored in Zookeeper

A. False

B. True

Correct Answer: B

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Huawei HCIA-Big Data V3.0 (H13-711_V3.0-ENU) Free Practice Test