Certified Reliability Engineer Practice Test

The two primary categories of reliability testing are correctly identified as life testing and stress testing. Life testing is aimed at determining how long a product will perform its intended function before failure occurs. This type of testing allows for the assessment of a product's lifespan and failure rates under normal operating conditions.

On the other hand, stress testing involves subjecting a product to extreme conditions, such as high temperatures, pressures, or other environmental factors, to determine its limits and to identify any potential failure modes that may not occur under typical usage. This method is crucial for understanding how a product behaves under challenging conditions, which contributes to ensuring its overall reliability.

By focusing on these two categories, engineers can better understand both the durability and performance limits of a product, leading to improved design, quality control, and customer satisfaction.