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H13-711_V3.0
HCIA-Big Data V3.0 Questions and Answers

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Viewing questions 136-150 out of questions

Questions # 136:

Which parts of the data need to be read to execute the HBase data reading business?

Options:

HLog

MemStore

HFile

HMaster

Answer

B, C

Questions # 137:

Which of the following descriptions about the functions of HMaster in HBase are correct?

Options:

Region load balancing, Region splitting and Region allocation after splitting

Responsible for creating tables, modifying tables, deleting tables

Responsible for load balancing of RegionServer

Region after RegionServer failsmigrate

Answer

A, B, C, D

Questions # 138:

In Hive, which of the following descriptions about bucketing is correct?

Options:

Data can put different data into different buckets according to the way of buckets

Unsortable in bucket

The advantage of bucketing is that it can achieve higher query processing efficiency and make sampling more efficient

You can specify the number of buckets when creating a table

Answer

A, C, D

Questions # 139:

What is the purpose of periodically executing Compaction in the HBase cluster?

Options:

Reduce the number of files under the same ColumnFamily in the same Region

Reduce the number of files in the same Region

Improve data read performance

Improve data writing capability

Answer

A, C, D

Questions # 140:

What kinds of Kafka message transmission guarantees are usually provided?

Options:

At Most Three Times

Exactly Once

At least once (At Lease once)

At Most once

Answer

B, C, D

Questions # 141:

What information is included in calling the Zookeeper client command?

Options:

The port number

IP address

server nickname

username

Answer

A, B

Questions # 142:

Among the following options, which are the processes that MapReduce will have?

Options:

Ccombine

Map

Reduce

Partition

Answer

B, C, D

Questions # 143:

Which of the following statements about segment file in Kafka Logs is correct?

Options:

Mapping all index metadata to memory can avoid index data IO disk operations of segmentfile

The index file is sparsely stored, which can greatly reduce the space occupied by the metadata of the index file

Sparse storage, that is, to store the original complete data only at intervals

Message can be quickly located through index information

Answer

A, B, C, D

Questions # 144:

The following description about the flink window is wrong

Options:

Rolling windows are overlapping in time

Rolling windows are non-overlapping in time

There is no overlap of time points between sliding windows

Time points overlap between sliding windows

Answer

A, C

Questions # 145:

SELECT a salary，b adiress FROM employee a JoiNsELECT adress FROM Employee info where provine ='zhejiang) b NO ananme=B. name: "What types of operations are included?

Options:

create table

Import Data

subquery

J0IN query

Answer

C, D

Questions # 146:

Which components in the Fusioninsight HD platform support table and column encryption?

Options:

Flink

HBase

Hive

HDFS

Answer

B, C

Questions # 147:

FusionInsight Hadoop:In the cluster, the cluster size has 70 nodes. If the recommended deployment scheme is adopted, what partitions may exist on the management node?