CompTIAData+
Domain 2Objective 1
Use Data Acquisition Methods DA0-001 Practice Questions (Page 2)
Part of the Data acquisition and preparation domain, which accounts for 22% of the DA0-001 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–13 in this domain), expect 3–4 from this objective — we provide 35 practice questions to prepare you well beyond it. (estimate)
35questions here
7free pages
10concepts
22%of the exam
Questions 6–10
- 6
A data analyst receives a dataset with a `phone_number` column that contains values like '(555) 123-4567', '555.123.4567', and '5551234567'. Before using this data in a report, the analyst needs to standardize all phone numbers to the format '555-123-4567'. Which data cleansing technique should be applied?
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Which of the following is a common technique used in data blending?
Select an answer first - 8
Which data validation technique checks whether a value falls within a specified range?
Select an answer first - 9
A company has a data warehouse that is updated nightly. A new requirement demands that the data warehouse reflect changes from the source systems within 15 minutes. Which data integration technique is most appropriate to meet this new requirement?
Select an answer first - 10
A company needs to integrate data from a legacy on-premises database and a modern cloud-based SaaS application. The legacy database is only available during business hours, while the SaaS application provides a real-time API. The integration must be available for reporting at 8:00 AM every day. Which integration approach best balances the constraints?
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