A Level Computer Science OCR Practice Exam

What describes a Knowledge Based System?

1. A system that solves problems based on user input

2. A system that relies solely on mathematical computations

3. A system that utilizes a defined set of rules for problem solving

4. A system that solves problems usually reserved for human decision-making

The correct answer is: A system that solves problems usually reserved for human decision-making

The definition of a Knowledge Based System (KBS) focuses on its ability to emulate human reasoning and decision-making processes. A KBS is designed to apply knowledge and complex sets of rules to solve problems that typically require human expertise. This includes domains such as medicine, engineering, and finance, where nuanced judgment calls must be made based on a wide array of data and experience. The integration of knowledge and rules allows the system to process information and make decisions much like a human expert would. A KBS can provide insights or recommendations based on in-depth analysis and reasoning, showcasing its capability to handle complexities that are often beyond straightforward computation. In contrast, options that reference user input or rely solely on mathematical computations do not capture the essence of what distinguishes a Knowledge Based System. While they may incorporate user interaction or arithmetic, they lack the critical component of leveraging a structured set of knowledge and expertise to solve problems. A KBS goes beyond basic computational tasks by integrating domain knowledge to tackle sophisticated challenges.