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DA0-001 Practice Questions

CompTIA Data+ Certification Exam

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Question # 81

A financial analyst is creating a daily billing report for a company. One night, the company's data warehouse did not update the data, which caused the data to be reported incorrectly the next day. Which of the following documentation elements should the analyst add to catch this error?

Options:

A.  

Version number

B.  

Data refresh

C.  

Frequently asked questions tab

D.  

Summary

Discussion 0
Question # 82

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?

Options:

A.  

Star.

B.  

Sun.

C.  

Snowflake.

D.  

Comet.

Discussion 0
Question # 83

During data cleansing, an analyst conducts measures of central tendency on a data set. Which of the following data is the analyst attempting to identify?

Options:

A.  

Duplicate

B.  

Missing

C.  

Outlying

D.  

Invalid

Discussion 0
Question # 84

Given the following table:

Question # 84

Which of the following methods is the best way to describe the changes in the values in the table?

Options:

A.  

Average

B.  

Range

C.  

Standard deviation

D.  

Median

Discussion 0
Question # 85

The current date is July 14, 2020. A data analyst has been asked to create a report that shows the company’s year-over-year Q2 2020 sales. Which of the following reports should the analyst compare?

Options:

A.  

A Q2 2020 and Q4 2019

B.  

YTD 2020 and YTD 2019

C.  

Q2 2020 and Q2 2019

D.  

Q2 2020 and Q2 2021

Discussion 0
Question # 86

An analyst is compiling a series of reports for the new executive board to review. Which of the following elements provides a snapshot of what is contained in the reports for the executives who do not have time to focus on the details?

Options:

A.  

Tables

B.  

Reference data sources

C.  

Observations and insights

D.  

Instruction page

Discussion 0
Question # 87

The total values in this month's revenue report are twice as much as last month's. Which of the following most likely occurred during the ETL process?

Options:

A.  

The data cleansing processes failed to execute.

B.  

The database connectivity failed.

C.  

The report included the previous month's data.

D.  

The data normalization processes failed.

Discussion 0
Question # 88

Which of the following defines the policies and procedures for managing the master data?

Options:

A.  

Data administration

B.  

Data stewardship

C.  

Data ownership

D.  

Data governance

Discussion 0
Question # 89

A data architect is designing a data solution for a retail clothing store chain. Each store has a database that tracks sales transactions. The data architect needs to create a summary table that will be used for a senior executive dashboard. The summary table should not contain duplicate store information. Which of the following should the data architect create?

Options:

A.  

A check constraint

B.  

A primary key

C.  

A foreign key

D.  

A unique constraint

Discussion 0
Question # 90

A company notifies its employees that emails will be automatically moved to a cloud-based server in 180 days. Which of the following describes this concept?

Options:

A.  

Data deletion

B.  

Data processing

C.  

Data retention

D.  

Data constraints

Discussion 0
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