Web-based testing has recently become common in both academic and professional settings. A web-based test is administered through a web browser. Individuals may complete a web-based test at nearly any time and at any place. In addition, almost any computer lab can become a testing center. It is important to understand the environmental issues that may influence test performance. This study furthers our understanding of web-based testing. The research is conducted using an experimental method with 220 undergraduate student participants in an academic environment. Test performance effects are examined based on administration environment, computer hardware configuration, and distractions. Results indicate that minor differences in hardware configurations may have a significant effect on test results.