D-DS-OP-23無料問題集「EMC Dell Data Scientist and Data Engineering Optimize 2023」

質問 1

What is the default replication factor for HDFS?

（A）3

（B）4

（C）2

（D）6

正解：A 解答を投票する

質問 2

The penalty that the EU supervisory authority levies on an organization that fails to comply with the General Data Protection Regulation (GDPR) is the greater of 4% of total global annual turnover or revenue, or a fixed fine amount.
What is the fixed fine amount, in millions of Euros?

（A）20

（B）5

（C）10

（D）40

正解：A 解答を投票する

質問 3

In the ELT process, data is transformed after being loaded into the target system.
Which tools can be used for ELT? (Select all that apply)

（A）Microsoft SSIS

（B）Apache Spark

（C）Amazon Redshift

（D）Apache Hadoop

（E）Talend

正解：A、B、E 解答を投票する

質問 4

What enables Pravega to rapidly ingest streaming data into durable storage?

（A）Relational database schema

（B）Apache Spark

（C）MongoDB

（D）Append-only logs

正解：D 解答を投票する

質問 5

Which of the following are data pipeline best practices? (Select all that apply)

（A）Using a monolithic design for simplicity

（B）Ensuring data quality and validation

（C）Avoiding error handling and monitoring

（D）Using a single tool for all pipeline components

正解：B 解答を投票する

質問 6

Why is Python commonly used for building data pipelines?

（A）Its readability and extensive libraries

（B）It requires compilation for execution

（C）It only supports batch processing

（D）It has no libraries for data manipulation

正解：A 解答を投票する

質問 7

Which phase of a data analytics project involves data engineers extracting, transforming, and loading data from various sources into a centralized repository?

（A）Data exploration

（B）Data ingestion

（C）Data visualization

（D）Data modeling

正解：B 解答を投票する

質問 8

Match each major support project of Hadoop with its definition.

正解：

質問 9

Which skill is crucial for a data engineer to effectively manage and optimize large-scale data processing systems?

（A）Graphic design

（B）Front-end development

（C）Data analysis

（D）Cloud computing

正解：D 解答を投票する

質問 10

In order for a table to be normalized in 4NF, what two conditions must be met?

（A）Table is in BCNF
No multi-valued dependencies exist

（B）Table is in 3NF
No dependencies exist

（C）Table is in 3NF
No multi-valued dependencies exist

（D）Table is in BCNF
Multi-valued depen

正解：A 解答を投票する

D-DS-OP-23 無料問題集「EMC Dell Data Scientist and Data Engineering Optimize 2023」

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