DA0-001 Exam Details

  • Exam Code
    :DA0-001
  • Exam Name
    :CompTIA Data+
  • Certification
    :CompTIA Certifications
  • Vendor
    :CompTIA
  • Total Questions
    :367 Q&As
  • Last Updated
    :May 29, 2026

CompTIA DA0-001 Online Questions & Answers

  • Question 161:

    Given the following tables:

    Which of the following will be the dimensions from a FULL JOIN of the tables above?

    A. Two rows and three columns
    B. Three rows and four columns
    C. Four rows and two columns
    D. Four rows and four columns

  • Question 162:

    Consider the following dataset which contains information about houses that are for sale:

    Which of the following string manipulation commands will combine the address and region name columns to create a full address?

    full_address------------------------- 85 Turner St, Northern Metropolitan 25 Bloomburg St, Northern Metropolitan 5 Charles St, Northern Metropolitan 40 Federation La, Northern Metropolitan 55a Park St, Northern Metropolitan

    A. SELECT CONCAT(address, ' , ' , regionname) AS full_address FROM melb LIMIT 5;
    B. SELECT CONCAT(address, '-' , regionname) AS full_address FROM melb LIMIT 5;
    C. SELECT CONCAT(regionname, ' , ' , address) AS full_address FROM melb LIMIT 5
    D. SELECT CONCAT(regionname, '-' , address) AS full_address FROM melb LIMIT 5;

  • Question 163:

    A data analyst is creating a dashboard and trying to identify the type of information that should be included.

    Which of the following should the analyst consider first?

    A. Data refresh rate
    B. Consumer types
    C. Access permissions
    D. Data sources and attributes

  • Question 164:

    An analyst reviews the following data:

    Which of the following is the value of the mode?

    A. 3
    B. 5
    C. 7
    D. 10

  • Question 165:

    Given the information in the following tables:

    Which of the following describes merging these tables to create a master file that includes all transactions for both online and in-store sales?

    A. Data audit
    B. Data completeness
    C. Data validation
    D. Data consolidation

  • Question 166:

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

    A. The temperature of a hot tub
    B. The height of a horse
    C. The time to complete a task
    D. The number of people in an office

  • Question 167:

    Which of the following BEST describes standard deviation?

    A. A measure that is used to establish a relationship between two variables
    B. A measure of how data is distributed
    C. A measure of the amount of dispersion of a set of values
    D. A measure that is used to find the significant difference between variables

  • Question 168:

    Which of the following are reasons to create and maintain a data dictionary? (Choose two.)

    A. To improve data acquisition
    B. To remember specifics about data fields
    C. To specify user groups for databases
    D. To provide continuity through personnel turnover
    E. To confine breaches of PHI data
    F. To reduce processing power requirements

  • Question 169:

    Which of the following best describes a difference between JSON and XML?

    A. JSON is quicker to read and write.
    B. JSON has to use an end tag.
    C. JSON strings are longer
    D. JSON is much more difficult to parse.

  • Question 170:

    A reporting analyst needs to create a report that refreshes automatically and is accessible to the entire sales organization. Which of the following tools is the most appropriate to use for this task?

    A. R
    B. Excel
    C. Tableau
    D. Python

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