Free 2021 HCIA-Big Data V3.0 H13-711_V3.0 Questions and Answers

1. The following figure shows the configuration of HDFS tiered storage. If the number of copies of the block is 4, which of the following statement is wrong?

All 4 blocks will be written to RAM_DISK

If it is the other copy fails to read except the first copy, try to write to the storage type specified in “Alternative Storage Policy for Copy”

The first copy of the block will be written into RAM_DISK, and the remaining copies will be written into DISK

If the first copy of the block fails to write to RAM_DISK, try to write to the storage type specified by the “alternative storage strategy”

2. In creating a Loader job, which of the following steps can be used to set the filter type?

Input settings

Conversion

Output

Basic information

3. Which of the following operations cannot be recorded in the audit log of the Fusioninsight HD system?

Delete service instance

Start and stop service instance

Manually eliminate the camp

Query historical monitoring

4. In Fusioninsight HD, which of the following is not part of the flow control feature of Hive? (Multiple choice)

Support threshold control of the total number of established connections

Support threshold control of the number of connections that each user has established

Support threshold control of the number of connections established by a specific user

Support threshold control of the number of connections established per unit time

5. Which of the following descriptions are correct about Fusionlnsight HD cluster upgrade? (Multiple choice)

It is not possible to manually switch between active and standby OMS during the upgrade process

Keep the root account passwords of all hosts in the cluster consistent

Keep the network open. Avoid abnormal upgrades due to network problems

Expansion cannot be done during the observation period

6. When the Fusionlnsight HD product deploys Kerberos and LDAP services, which of the following descriptions is correct? (Multiple choice)

Before deploying Kerberos service, LDAP service must be deployed

LDAP service and Kerberos service must be deployed on the same node

Kerberos service and LDAP service are deployed on the same node to facilitate data access and improve performance

LDAP service can be shared by multiple clusters

7. Which of the following targets can Fusioninsight HD Loader export HDFS data to? (Multiple choice)

SFTP server

FTP server

Oracle database

DB2 database

8. Which of the following OS versions are recommended to build a Fusioninsight V1R2C60 cluster? (Multiple choice)

SUSE11 SP1/SP2/SP3 for AMD64&lnter64

CentOS6.6

Redhat-6.4-x86_64

RedHat-6.5-x86_64

RedHat-6.7-x86_64

Ubuntu6.3

9. The open source big data platform based on Hadoop mainly provides distributed computing and storage capabilities for data. Which of the following are distributed storage components? (Multiple choice)

Spark

HDFS

HBase

10. In the Fusionlnsight Hadoop cluster, the cluster scale has 70 nodes. If the recommended deployment plan is adopted, what partitions might exist on the management node? (Multiple choice)

/srv/BigData/zookeeper

/srv/BigData/dbdata-om

/srv/BigData

/srv/BigData/jumalnode

/srv/BigData/hadoop/data5

11. What are the aspects of Flink’s compatibility? (Multiple choice)

Can be mixed with Hadoop’s original mappers and reducers

YARN can be used as the resource scheduling manager of Flink cluster

Ability to use Hadoop formatted input and output

Ability to obtain data locally

12. What are the key features of Streaming in Huawei’s big data product Fusioninsight HD? (Multiple choice)

Flexibility

Scalability

Disaster tolerance

Message reliability

13. Which of the following sub-products does the Fusioninsight family include?(Multiple choice)

Fusioninsight Miner

Fusioninsight Farmer

Fusioninsight HD

GaussDB 200

14. Which of the following statements is correct about the interaction between Flink and other components? (Multiple choice)

The implementation of Flink’s checkpoint relies on Zookeeper

Flink can send the received components to Kafka

The operation of Flink tasks relies on YARN for resource scheduling management

Flink reads and writes data in the HDFS file system

15. The nodes in the ElasticSearch cluster are divided into master and slave.

True

False

16. In order to optimize performance, it is recommended to deploy LdapServer and KrbServer on the same node in all clusters.

True

False

17. ElasticSearch is strongly dependent on Zookeeper.

True

False

18. In the Fusioninsight HD platform, HBase does not currently support secondary index.

True

False

19. When using Loader to import and export data, it must go through the Reduce phase for data processing.

True

False

20. In the flume architecture,a Source can connect to multiple channels.

True

False

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