A market research firm needs to collect product prices from a competitor's website that does not offer an API or a data feed. The website's structure changes frequently, and the firm needs a maintainable solution. Which approach is most appropriate?

Manually copy the prices into a spreadsheet each day.

Write a web scraper with a CSS selector library and schedule it to run daily, storing output as CSV files.

Request a database dump from the competitor's IT department.

Use the website's RSS feed to extract the prices.

A financial services firm must store immutable audit records for 7 years to meet regulatory requirements. The records are written once and never updated. The firm currently uses a relational database, but storage costs are high. The data architect must choose a storage solution that minimizes cost while preserving the ability to query the records. Which option is the best choice?

Store the records in a columnar database format like Parquet on a network drive.

Migrate the audit records to an object storage service and use a separate search index for queries.

Keep the records in the relational database and add more storage capacity.

Compress the records and store them in a single JSON file in the repository.

A regional bank needs to generate a monthly report that combines customer account balances (stored in a transactional system) with historical marketing campaign responses (stored in a separate analytical system). The data team must query both systems using SQL without moving data into a new store. Which approach should the data team use?

Create a new database and use an ETL tool to load both sources into it nightly.

Use a federated query tool that connects to both database engines and joins the data at query time.

Restore a backup of the analytical database into the transactional database server.

Export both tables to CSV files and merge them using a spreadsheet application.

A data analyst wants to retrieve current weather data from a public weather service to include in a dashboard. Which method is most appropriate for this task?

Using the weather service's REST API

Web scraping the weather service's website

Querying the weather service's database directly

Downloading a static CSV file from the website

CompTIAData+

Domain 1Objective 2

Identify Data Sources DA0-001 Practice Questions (Page 3)

Part of the Data concepts and environments domain, which accounts for 20% of the DA0-001 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 31 practice questions to prepare you well beyond it. (estimate)

31questions here

7free pages

6concepts

20%of the exam

Questions 11–15

11application · medium
A market research firm needs to collect product prices from a competitor's website that does not offer an API or a data feed. The website's structure changes frequently, and the firm needs a maintainable solution. Which approach is most appropriate?
Select an answer first
12expert · hard
A financial services firm must store immutable audit records for 7 years to meet regulatory requirements. The records are written once and never updated. The firm currently uses a relational database, but storage costs are high. The data architect must choose a storage solution that minimizes cost while preserving the ability to query the records. Which option is the best choice?
Select an answer first
13application · medium
A regional bank needs to generate a monthly report that combines customer account balances (stored in a transactional system) with historical marketing campaign responses (stored in a separate analytical system). The data team must query both systems using SQL without moving data into a new store. Which approach should the data team use?
Select an answer first
14foundation · easy
A data analyst wants to retrieve current weather data from a public weather service to include in a dashboard. Which method is most appropriate for this task?
Select an answer first
15foundation · easy
Which of the following is an example of a data repository?
Select an answer first

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Identify Data Sources DA0-001 Practice Questions (Page 3)

Questions 11–15

A market research firm needs to collect product prices from a competitor's website that does not offer an API or a data feed. The website's structure changes frequently, and the firm needs a maintainable solution. Which approach is most appropriate?

A data analyst wants to retrieve current weather data from a public weather service to include in a dashboard. Which method is most appropriate for this task?

Which of the following is an example of a data repository?

Keep studying — Data concepts and environments