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CompTIA DA0-001 - CompTIA Data+ Certification Exam

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Total 363 questions

Emma is working in a data warehouse and finds a finance fact table links to an organization dimension, which in turn links to a currency dimension that not linked to the fact table.

What type of design pattern is the data warehouse using?

A.

Star.

B.

Sun.

C.

Snowflake.

D.

Comet.

Which of the following best describes a 95% confidence interval?

A.

There is a 95% probability that a sample is within one standard deviation of the mean.

B.

A stated range may contain 95% of the population mean, 95% of the time.

C.

A set of ranges contains the population mean with 95% certainty.

D.

A range contains 95% of the population mean.

Amanda needs to create a dashboard that will draw information from many other data sources and present it to business leaders.

Which one of the following tools is least likely to meet her needs?

A.

QuickSight.

B.

Tableau.

C.

Power BI.

D.

SPSS Modeler.

Which of the following reports can be used when insight into operational performance is needed each Wednesday?

A.

Static report

B.

Tactical report

C.

Recurring report

D.

Ad hoc report

An analyst wants to combine two data sets into a single spreadsheet. Column names from the first spreadsheet are listed in rows in the second spreadsheet. Which of the following is the first step the analyst should take to combine the data sets?

A.

Blend

B.

Merge

C.

Concatenate

D.

Transpose

Which of the following query statements would be used when filtering data in a relational database management system? (Select two).

A.

ORDER BY

B.

HAVING

C.

WHERE

D.

SELECT

E.

INSERT

F.

GROUP BY

Daniel is using the structured Query language to work with data stored in relational database.

He would like to add several new rows to a database table.

What command should he use?

A.

SELECT.

B.

ALTER.

C.

INSERT.

D.

UPDATE.

Given the data below:

In which of the following file formats is the data presented?

A.

Xs

B.

CSV

C.

RIF

D.

XML

A user imports a data file into the accounts payable system each day. On a regular basis. the field input is not what the system is expecting. so it results in an error for the row and a broken import process. To resolve the issue, the user opens the file, finds the error in the row, and manually corrects it before attempting the import again. The import sometimes breaks on subsequent attempts. though. Which of the following changes should be made to this process to reduce the number of errors?

A.

Delete all incorrect inputs and upload the corrected file.

B.

Have the user manually review the file for data completeness before loading it

C.

Create a data field to data type validator to run the file through prior to import.

D.

Spot-check the file prior to import to catch and correct field errors.

An analyst wants to check the progress and performance regarding the number of customers an organization served in the last six years. Which of the following represents the type of analysis theanalyst should perform?

A.

Correlation analysis

B.

Trend analysis

C.

Regression analysis

D.

Descriptive analysis