CompTIA DA0-002 Practice Questions| TestInsights

Question 1

[Data Concepts and Environments]

Which of the following best describes the function of a data type?

ATo provide a generic identifier for files used in analysis

BTo identify the program needed to open a file

CTo differentiate the real value of the field in its context

DTo make the addition of individual records simpler

Correct : C

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ATo provide a generic identifier for files used in analysis

BTo identify the program needed to open a file

CTo differentiate the real value of the field in its context

DTo make the addition of individual records simpler

Question 2

[Data Governance]

A data analyst receives a notification that a customized report is taking too long to load. After reviewing the system, the analyst does not find technical or operational issues. Which of the following should the analyst try next?

ACheck that the appropriate filters are applied.

BCheck data source connections.

CCheck for data structure changes in the report.

DCheck whether other peers have the same issue.

Correct : A

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ACheck that the appropriate filters are applied.

BCheck data source connections.

CCheck for data structure changes in the report.

DCheck whether other peers have the same issue.

Question 3

[Data Concepts and Environments]

A data analyst wants to understand several datasets at the variable level. Which of the following should the analyst consult to find this information?

AData lineage

BData dictionary

CData flow diagram

DData versioning

Correct : B

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AData lineage

BData dictionary

CData flow diagram

DData versioning

Question 4

[Data Concepts and Environments]

Which of the following data repositories should a company use when structured data about the whole company needs to be stored in a predefined data structure?

AData mart

BData warehouse

CData silo

DData lake

Correct : B

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AData mart

BData warehouse

CData silo

DData lake

Question 5

[Data Analysis]

A table contains several rows of cellular numbers with call timestamps, call durations, called numbers, and carriers of the called number. Which of the following allows a data analyst to sort the cellular numbers based on the carriers of the called numbers and include the total call durations?

ASELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY cellular_number ORDER BY called_number_carrier;

BSELECT cellular_number, SUM(call_duration) FROM calls GROUP BY call_duration ORDERBY called_number_carrier;

CSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY cellular_number, called_number_carrier ORDER BY called_number_carrier;

DSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY call_duration ORDER BY called_number_carrier;

Correct : C

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ASELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY cellular_number ORDER BY called_number_carrier;

BSELECT cellular_number, SUM(call_duration) FROM calls GROUP BY call_duration ORDERBY called_number_carrier;

CSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY cellular_number, called_number_carrier ORDER BY called_number_carrier;

DSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY call_duration ORDER BY called_number_carrier;

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