Software Quality Assurance Practice Exam

Which description fits the appropriate testing tiers for the data layer?

1. Verifies that graphics have the correct resolution and size.

2. Verifies that the data is stored correctly and accurately.

3. Ensures that data is collected correctly.

The correct answer is: Verifies that the data is stored correctly and accurately.

The description that aligns with the appropriate testing tiers for the data layer focuses specifically on the integrity and accuracy of data storage. Verifying that data is stored correctly and accurately is fundamental in ensuring that a database or data repository functions as intended. This tier of testing typically involves checking that various data operations, such as insertions, updates, and deletions, reflect expected outcomes and maintain data integrity. Data layer testing assesses how well the structure of the database manages data and ensures that it can be retrieved accurately when needed. Successfully passing these tests means that the system maintains reliable data without corruption, accurately reflecting the information being processed or utilized within applications. In contrast, other options focus on aspects like visual elements and data collection, which do not address the core role of the data layer in software architecture. Testing aspects like graphics resolution pertains to the UI layer, while ensuring that data is collected correctly relates to functionality and data acquisition processes rather than the data layer itself. Thus, the focus of the correct answer is firmly based on the core attributes of the data layer's purpose within a software system.