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

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Viewing page 13 out of 13 pages

Viewing questions 181-195 out of questions

Questions # 181:

Which of the following statements about CarbonData in Fusioninsight is correct?

Options:

cArbon is also a high-performance analytics engine that integrates data sources with spark.

cArbon uses a combination of lightweight compression and heavyweight compression to compress data, which can reduce data storage space by 60%-80% and greatly save hardware storage costs.

arbon is a new Apache Hadoop native file format that uses advanced columnar storage, indexing, compression, and encoding techniques to improve computational efficiency to help accelerate data queries over petabytes of magnitude, and can be used for faster interactive queries.

The purpose of using carbon is to provide ultra-fast responses to ad-hoc queries on big data.

Answer

A, B, C, D

Questions # 182:

To enable the log aggregation function of the Yam component in the Hadoop platform, which parameter needs to be configured?

Options:

yarn.nodemanager.local-dirs

yarn.nodemanager.log-dirs

yarn.acl.enable

yarn.log-aggregation-enable

Answer

Questions # 183:

After submitting the topology using the Streaming client shell command in the Fusioninsight HD system, use Strom The UI view shows that the topology has not processed data for a long time. What are the possible reasons?

Options:

Supervisor is the component that receives data in topology and then performs processing

There is a logic error in the topology business, and it cannot run normally after submission

The topology is too complex or the number of concurrent users is too large, resulting in workerThe startup time is too long, exceeding the waiting time of Supervisort

The supervisor's slots resources are exhausted, and after the topology is submitted, the slots cannot be allocated to start the worker process.

Answer

B, C, D

Questions # 184:

What methods or interfaces does Loader provide to implement job management?

Options:

WEB UI

Linuxt command line

REST interface

Java API

Answer

A, B, C, D

Questions # 185:

Regarding the task selection of the capacity scheduler, which of the following statements is true( )

Options:

Minimum queue level first

Resource recycling request queue priority

Maximum queue level first

The queue with the lowest resource utilization takes precedence

Answer

Questions # 186:

Which component controls the master/slave arbitration in HDFS?

Options:

Zooleeper Failover Controller

NodeManager

ResourceManager

HDFS Client

Answer

Questions # 187:

Which of the following options is an advantage of Kerberos?

Options:

prevent replay attacks

Has high performance

Support two-way authentication

Able to prevent brute force

Answer

A, B, C, D

Questions # 188:

When executing the HBases data reading business, which parts of the data need to be read?

Options:

HFile

HLog

MemStore

HMaster

Answer

A, C

Questions # 189:

Which of the following functions can the Shell1 script of Loader achieve?

Options:

View job status

start job

stop job

Data source query

Answer

A, B, C, D

Questions # 190:

Which of the following statements about Fusioninsight HBasel visual modeling are correct?

Options:

Visual modeling helps DBAs in modeling design and lowers the threshold for using HBase

Qualifier HBase column: each column represents an attribute of business data

Realize the division of labor: DBAs focus on data table modeling, developers focus on user table names and columns used

Column user table column: each column represents a KeyValue

Answer

A, B, C

Questions # 191:

Which of the following are enterprise-level big data application scenarios

Options:

Internal Operations Management

Supply Chain Management

Customer Analysis

Marketing Analysis

Answer

A, B, C, D

Questions # 192:

In the Fusioninsight HD system, it fails to view the topology or submit the topology using the Shelle command of the Streaming client. Which of the following positioning methods are correct?