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DA0-002 Practice Questions

CompTIA Data+ Exam (2025)

Last Update 3 days ago
Total Questions : 121

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Question # 21

A data analyst has a dashboard that shows weekly data. For the past few weeks, the data has not updated. Which of the following is the best way to confirm that the data is current?

Options:

A.  

Setting up a monitoring alert that checks on data freshness

B.  

Working with a database administrator on query optimization

C.  

Validating that the proper data sources are being used

D.  

Removing all filters from the dashboard

Discussion 0
Question # 22

A data analyst troubleshoots a dashboard every day for a week. Which of the following techniques best addresses how to validate the data moving forward?

Options:

A.  

Inquiring about structure changes

B.  

Setting up monitoring alerts

C.  

Reaching out to users daily

D.  

Rebuilding the dashboard

Discussion 0
Question # 23

A data analyst is gathering data from multiple tables in a database. The analyst needs certain columns from each table. Which of the following is the best method to accomplish this task?

Options:

A.  

Aggregate

B.  

Union

C.  

Nest

D.  

Join

Discussion 0
Question # 24

A data analyst learns that a report detailing employee sales is reflecting sales only for the current month. Which of the following is the most likely cause?

Options:

A.  

Lack of permissions

B.  

An error in SQL code

C.  

Report refresh failure

D.  

Connectivity issues

Discussion 0
Question # 25

While interacting with a data set, a data analyst learns that copies of the data are distributed across several data repositories around the globe. Which of the following concepts best describes this practice?

Options:

A.  

Redundancy

B.  

High availability

C.  

Replication

D.  

Duplication

Discussion 0
Question # 26

Which of the following best represents a type of infrastructure that requires a company to purchase and maintain all of its own servers?

Options:

A.  

Private

B.  

Cloud

C.  

Hybrid

D.  

Public

Discussion 0
Question # 27

A data analyst team needs to segment customers based on customer spending behavior. Given one million rows of data like the information in the following sales order table:

Customer_ID

Region

Amount_spent

Product_category

Quantity_of_items

00123

East

20000

Baby

4

00124

West

30000

Home

6

00125

South

40000

Garden

7

00126

North

50000

Furniture

8

00127

East

60000

Baby

10

Which of the following techniques should the team use for this task?

Options:

A.  

Standardization

B.  

Concatenate

C.  

Binning

D.  

Appending

Discussion 0
Question # 28

A sales analyst is using the following table to produce a report on January sales data:

Month

Sales

Year

Product

Jan

4324563

2024

Chair

Jan

23345

2024

Table

Jan

2456897

2024

Sofa

Jan

345456

2024

Desk

Jan

23345

2024

Table

Which of the following inconsistencies is present in the data set?

Options:

A.  

Duplication

B.  

Redundancy

C.  

Missing values

D.  

Outliers

Discussion 0
Question # 29

Which of the following data repositories stores unstructured and structured data?

Options:

A.  

Data store

B.  

Data silo

C.  

Data mart

D.  

Data lake

Discussion 0
Question # 30

A data analyst needs to create and deliver a dashboard that displays the company's financial transactions as they are updated. Which of the following delivery methods should the analyst consider? (Select two).

Options:

A.  

Real-time

B.  

Snapshot

C.  

Dynamic

D.  

Static

E.  

Ad hoc

F.  

Time series

Discussion 0
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