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Huawei H13-723_V2.0 - HCIP-Big Data Developer V2.0

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Total 526 questions

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

FusionInsight HDin, aboutOoze, which of the following operations can be performed on a suspended job? (many

select)

A.

kill

B.

run

C.

resume

D.

submit

A large-scale production enterprise plans to transform its internal logistics data and sales data into big data. The design department provides data storage

Analysis of the program, which of the following statements are correct?

A.

HBaseIt can store massive data and support dynamic expansion, which can fulfill the storage requirements of logistics and sales data.

B.

HbaseSupport colleges and universities to read immediately, and can complete real-time analysis and command of the logistics situation through reasonable design.

C.

Logistics data is very sparse,HBaseCan handle sparse data efficiently.

D.

HBaseIt can be built on ordinary commercial servers, and the construction cost is relatively low.

FusionInsight HDsystematicV100R002C60version,HiveOnly supports based onMapReduceEngine query service,

not supported based onSparkEngine query service.

A.

True

B.

False

existSpark, the accumulator can realize high-speed parallel counter and variable summation; inSparkduring application development,

only inDriverGet the value of this counter on .

A.

True

B.

False

FusionInsight HDin, aboutHiveandSparksql, which of the following descriptions are correct? (multiple choice)

A.

Both are available externallySQLor classSQLability

B.

Both can run onMapReduceon the computational framework

C.

Both are available via table fields andHBaseAccess by field mappingHBasedata on

D.

Both can run onSparkon the computational framework

existFusionInsight HDmiddle,SparkBy defaultYARNAs a cluster resource management system.

A.

True

B.

False

existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCorefinish independentlySQLSentence parsing, optimization

operations such as transformation and execution.

A.

True

B.

False

Suppose there is an application that needs to be accessed frequentlyOracleThe user table in the database, in order to improve performance, introduceRedisto cache users

information.

For this scene,RedisWhich of the following is the best data structure choice for ?

A.

list

B.

set

C.

hash

D.

sorted set

aboutRedisCluster topology information, is the following description correct?

A.

The client caches the topology information of the cluster

B.

The server caches the topology information of the cluster

C.

both are

D.

more than two

existHBaseWhile the application is running, the application can write data while creating the table.

A.

True

B.

False

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-ducers.max

C.

hive.exec.max.dynamic.partitions

D.

hive.exec.max.dynamic.partitions.pernode

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

A.

Only the HMI account can be used.

B.

Only the machine account can be used.

C.

A client does not support the simultaneous use of multiple accounts.

D.

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.

which come downRedisIs the command an atomic operation?

A.

INCR(increment the stored digital value by one)

B.

HINCRBY(for the hash tablekeydomain infieldvalue plus incrementincrement)

C.

LPUSH(for linked listspushoperate)

D.

All of the above

existFusionInsight HDmiddle,FlumeIn a configuration file, if there are multiplesource,butsourceThe name cannot be repeated.

A.

True

B.

False