CompTIA Data+ DA0-002 (V2) Practice Question

The correct answer is .json. JSON (JavaScript Object Notation) is a lightweight, text-based data-interchange format that is easy for humans to read and for machines to parse. It is built on two structures: a collection of name/value pairs (objects) and an ordered list of values (arrays). This structure makes it ideal for representing complex, nested data, such as an order that contains a list of products, which is a common requirement for web APIs.

• The .csv (Comma-Separated Values) format is not the correct answer. While it is text-based and human-readable, it is designed for flat, tabular data and does not natively support nested or hierarchical data structures.
• The .xlsx format is also incorrect. It is the file format for Microsoft Excel spreadsheets and is fundamentally a binary format (a zip archive of XML files), not a simple text-based file suitable for lightweight API communication.
• The .dat extension is incorrect because it is a generic extension for a data file and does not define a specific format. A .dat file's structure is determined by the application that created it and is not inherently human-readable or designed for structured, nested data in a standardized way.