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Questions # 1:

Which of the following commands downloads directory files from HDFS to local?

Options:
A.

dfs-cat

B.

dfs -mkdir

C.

dfs -get

D.

dfs-put

Questions # 2:

Which of the following is not a characteristic of the MapReduce component in Hadoopl?

Options:
A.

easy to program

B.

good scalability

C.

real-time computing

D.

High fault tolerance

Questions # 3:

Which of the following is not a role or service involved in the process of reading data in HBasei?

Options:
A.

HDFS

B.

Zookeeper

C.

HMaster

D.

HRegionServer

Questions # 4:

Which of the following is not a core element of KrbServer?

Options:
A.

KDC (Key Distribution Center)

B.

Kerberos Client

C.

Kerberos KDC Client

D.

Kerberos KDC Server

Questions # 5:

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

Options:
A.

Each topic can only be divided into one partition (area)

B.

The number of Topic partitions can be configured at creation time

C.

The storage layer of each Partition corresponds to a log file, and the log file records all information data

D.

Each message published to Kafkab has a category, which is called Topic, which can also be understood as a queue for storing messages.

Questions # 6:

Which of the following HDFS commands can be used to check the integrity of data blocks?

Options:
A.

HDFS fsck

B.

HDFS fsck-delete

C.

HDFS dfsadmin -report

D.

HDES balancer -threshold 1

Questions # 7:

Which process is described in the Map stage shown in the figure below?

Options:
A.

Partition

B.

Sort

C.

Spill/Merge

D.

Ccombine

Questions # 8:

What does Fusioninsight HD HBase use by default as its underlying file storage system?

Options:
A.

HDFS

B.

Hadoop

C.

Memory

D.

MapReduce

Questions # 9:

Which of the following programming languages is Spark implemented in?

AC

B.C++

C. JAVA

D. Scala

Questions # 10:

Streaming:Event listening is mainly implemented through which of the following services provided by Zookeeper?

Options:
A.

Distributed detection mechanism

B.

ACK

C.

Watcher

D.

Checkpoint

Questions # 11:

The underlying data of HBase exists in the form of?

Options:
A.

keyvalue

B.

column store

C.

row storage

D.

real-time storage

Questions # 12:

A user information table meg is saved in HBaser of Fusioninsight HD_table, Rowkey is the user id, one of which is the name of the user, now write three KeyValues to this column in sequence:001:Li, 001:Mary001:Lily, may I ask scanmeg_table', (VERSION=>2) which pieces of data will be returned?

Options:
A.

001:Lily

B.

001:Li

C.

001:Mary, 001:Lily

D.

001:Li, 001:Mary, 001:Lily

Questions # 13:

When creating a Loaderf job, in which of the following steps can the filter type be set?

Options:
A.

input settings

B.

convert

C.

output

D.

Basic Information

Questions # 14:

Which module is responsible for Fusioninsight Manager user data storage?

Options:
A.

CAS

B.

AOS

C.

Kerberos

D.

LDAP

Questions # 15:

Which of the following options are suitable for MapReduce?

Options:
A.

Offline computing

B.

real-time interactive computing

C.

Iterative calculation

D.

Streaming Computing

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