Software Quality Assurance Practice Exam

What does it mean to raise the reliability of a program?

1. To demonstrate that errors are not present

2. To find and remove errors

3. To show that a program performs its intended functions

4. To establish confidence that a program does what it is supposed to do

The correct answer is: To find and remove errors

Raising the reliability of a program fundamentally means enhancing the assurance that the software will perform consistently and correctly over time. The correct choice highlights the process of finding and removing errors, which directly contributes to increased reliability. By identifying defects and correcting them, a program is less likely to exhibit failures during its operation, thereby increasing the user's confidence in its performance. This process involves rigorous testing and debugging methodically targeted at ensuring that all potential points of failure are addressed. The elimination of errors not only prevents unexpected behavior during usage but also improves system stability, which is a core component of reliability. While other options touch on aspects of software performance and validation, they do not capture the essence of what it means to reliably verify and improve software. Option A, for instance, implies an absolute condition of error absence, which is more idealistic than practical. Option C suggests a demonstration of functionality without addressing potential internal flaws that could affect reliability. Option D involves establishing confidence, but this is more of a result of reliability rather than an action that directly raises it. Prioritizing error identification and resolution is a foundational strategy for achieving heightened software reliability.