CompTIA Data+ Certification Exam (DA0-001) Free Practice Test

Question 1

A data set was recorded using multimedia technology. Which of the following is a necessary step on the way to interpretation?

A. Structural equation modeling

B. Sampling

C. Transcription

D. Sequential analysis

Correct Answer: C

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Question 2

A reporting analyst is creating a dashboard that shows the year-over-year performance for a sales organization. Which of the following is the best visual for the analyst use to illustrate the organization's performance?

A. Scatter plot

B. Line chart

C. Pie chart

D. Heat map

Correct Answer: B

Question 3

Which of the following is an example of PII?

A. Ethnicity

B. Age

C. Gender

D. Name

Correct Answer: D

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Question 4

Which of the following best describes an exploratory analysis?

A. Involves analysis of exploring data sets for performance tracking

B. Involves the use of descriptive statistics to understand observations

C. Involves the use of arithmetic algebra to determine the distribution

D. Involves the testing of specific hypotheses

Correct Answer: B

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Question 5

Which of the following report types is most appropriate for a high-level, year-end report requested by a Chief Executive Officer?

A. Recurring

B. Self-service

C. Dynamic

D. Ad hoc

Correct Answer: A

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Question 6

Given the following table:

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

A. Average

B. Range

C. Standard deviation

D. Median

Correct Answer: B

Question 7

Five dogs have the following heights in millimeters:
300, 430, 170, 470, 600
Which of the following is the mean height for the five dogs?

A. 493mm

B. 504mm

C. 405mm

D. 394mm

Correct Answer: D

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Question 8

Which of the following is a characteristic of a relational database?

A. It has undefined fields.

B. It is structured in nature.

C. It uses minimal memory.

D. It utilizes key-value pairs.

Correct Answer: B

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Question 9

Which of the following is concatenate typically used to combine?

A. Databases

B. Columns

C. Rows

D. Tables

Correct Answer: B

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Question 10

An analyst wants to extract data from a variety of sources and store the data in a cloud-based environment prior to cleaning. Which of the following integration techniques should the analyst use?

A. API

B. SQL

C. ETL

D. ELT

Correct Answer: C

Question 11

A web developer wants to ensure that malicious users can't type SQL statements when they asked for input, like their username/userid.
Which of the following query optimization techniques would effectively prevent SQL Injection attacks?

A. Subset of records.

B. Indexing.

C. Temporary table in the query set.

D. Parametrization.

Correct Answer: D

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Question 12

An analyst is working on a project for a director. During this process. the analyst pulled the data. created summarized tables and graphs with descriptions, created a report summary, and inserted all items into a report. After writing the report, which of the following would be the most appropriate next step?

A. Complete a check for quality in the report.

B. Complete a review of the data and a check for consistency

C. Complete an audit on the data pulled for the report.

D. Complete a trend analysis to be included in the report.

Correct Answer: A

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Question 13

Which of the following is an example of a discrete variable?

A. The number of people in an office

B. The temperature of a hot tub

C. The time to complete a task

D. The height of a horse

Correct Answer: A

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Question 14

Consider this dataset showing the retirement age of 11 people, in whole years:
54, 54, 54, 55, 56, 57, 57, 58, 58, 60, 60
This tables show a simple frequency distribution of the retirement age data.

A. 56

B. 54

C. 57

D. 55

Correct Answer: B

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CompTIA Data+ Certification (DA0-001) Free Practice Test