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 251:

    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. Pie chart
    B. Scatter plot
    C. Heat map
    D. Line chart

  • Question 252:

    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. Indexing.
    B. Subset of records.
    C. Temporary table in the query set.
    D. Parametrization.

  • Question 253:

    Which of the following value is the measure of dispersion "range" between the scores of ten students in a test.

    The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77. A. 90

    B. 60

    C. 70

    D. 80

    Correct Answer. B

  • Question 254:

    A database administrator is required to mask certain table columns containing Pll in order to comply with the company privacy policy.

    Which of the following are the most likely types of information the administrator should mask? (Select two).

    A. Government-issued ID
    B. Address
    C. Order ID
    D. Order date
    E. Customer ID
    F. Referral number

  • Question 255:

    After completing web scraping, which of the following file formats needs to be parsed?

    A. .html
    B. .txt
    C. .csv
    D. .tsv

  • Question 256:

    An analyst must obtain the average daily sales for the following week: Which of the following must the analyst perform to obtain this value?

    A. Data normalization
    B. Data append
    C. Data aggregation
    D. Data blending

  • Question 257:

    Which of the following data types is best for representing count data?

    A. Discrete
    B. Referential
    C. Sequential
    D. Continuous

  • Question 258:

    An analyst is required to run a text analysis of data that is found in articles from a digital news outlet.

    Which of the following would be the BEST technique for the analyst to apply to acquire the data?

    A. Web scraping
    B. Sampling
    C. Data wrangling
    D. ETL

  • Question 259:

    An analyst is designing a dashboard that will provide a story of the sales and sales customer ratio. The following data is available:

    Which of the following charts should the analyst consider including in the dashboard?

    A. A column chart with site and sales
    B. A line chart with site and sales
    C. A pie chart with site and sales
    D. A scatter chart with site and sales

  • Question 260:

    Alex wants to use data from his corporate sale, CRM, and shipping systems to try and predict future sales.

    Which of the following systems is the most appropriate?

    A. Data mart.
    B. OLAP.
    C. Data Warehouse.
    D. OLTP.

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