Cambridge AS Level IT 9626 - Topic 7
Expert Systems | Revision Notes (2025-
2027 Syllabus)
Introduction
Cambridge’s 2026–2027 syllabus for Topic 7 covers **expert-
system purposes, components, applications, forward and
backward chaining, , data-driven and goal-driven reasoning,
and advantages/disadvantages**.
**1. What is an expert system?**
A. A system used only for storing files
B. A computer system that uses expert knowledge to provide
solutions or advice
C. A system for connecting computers to a network
D. A program used only for word processing
**Answer: B**
**2. Which component contains the facts and rules used by an
expert system?**
A. User interface
B. Explanation system
C. Knowledge base
D. Output device
,**Answer: C**
**3. What is the main purpose of an inference engine?**
A. To display graphics
B. To apply rules to facts to reach conclusions
C. To store user passwords
D. To edit documents
**Answer: B**
**4. Which component allows a user to interact with an expert
system?**
A. User interface
B. Knowledge base
C. Inference engine
D. Knowledge base editor
**Answer: A**
**5. What is the purpose of an explanation system?**
A. To create databases
B. To explain how the system reached its conclusion
C. To collect electricity
,D. To replace the knowledge base
**Answer: B**
**6. Which component is used to add or modify knowledge in
an expert system?**
A. User interface
B. Knowledge base editor
C. Inference engine
D. Explanation system
**Answer: B**
**7. Which is an example of an expert-system application?**
A. Medical diagnosis
B. Playing an audio file
C. Formatting a USB drive
D. Printing a document
**Answer: A**
**8. Which application could use an expert system to identify
underground mineral deposits?**
A. Mineral prospecting
, B. Word processing
C. Desktop publishing
D. Video editing
**Answer: A**
**9. An expert system used to determine possible causes of a
faulty engine is an example of:**
A. Route scheduling
B. Car engine fault diagnosis
C. Financial planning
D. Plant identification
**Answer: B**
**10. Which is most likely to be stored in a knowledge base?**
A. Rules and facts
B. Monitor brightness
C. Printer paper
D. Keyboard layout
**Answer: A**
**11. What does an IF…THEN rule contain?**
Expert Systems | Revision Notes (2025-
2027 Syllabus)
Introduction
Cambridge’s 2026–2027 syllabus for Topic 7 covers **expert-
system purposes, components, applications, forward and
backward chaining, , data-driven and goal-driven reasoning,
and advantages/disadvantages**.
**1. What is an expert system?**
A. A system used only for storing files
B. A computer system that uses expert knowledge to provide
solutions or advice
C. A system for connecting computers to a network
D. A program used only for word processing
**Answer: B**
**2. Which component contains the facts and rules used by an
expert system?**
A. User interface
B. Explanation system
C. Knowledge base
D. Output device
,**Answer: C**
**3. What is the main purpose of an inference engine?**
A. To display graphics
B. To apply rules to facts to reach conclusions
C. To store user passwords
D. To edit documents
**Answer: B**
**4. Which component allows a user to interact with an expert
system?**
A. User interface
B. Knowledge base
C. Inference engine
D. Knowledge base editor
**Answer: A**
**5. What is the purpose of an explanation system?**
A. To create databases
B. To explain how the system reached its conclusion
C. To collect electricity
,D. To replace the knowledge base
**Answer: B**
**6. Which component is used to add or modify knowledge in
an expert system?**
A. User interface
B. Knowledge base editor
C. Inference engine
D. Explanation system
**Answer: B**
**7. Which is an example of an expert-system application?**
A. Medical diagnosis
B. Playing an audio file
C. Formatting a USB drive
D. Printing a document
**Answer: A**
**8. Which application could use an expert system to identify
underground mineral deposits?**
A. Mineral prospecting
, B. Word processing
C. Desktop publishing
D. Video editing
**Answer: A**
**9. An expert system used to determine possible causes of a
faulty engine is an example of:**
A. Route scheduling
B. Car engine fault diagnosis
C. Financial planning
D. Plant identification
**Answer: B**
**10. Which is most likely to be stored in a knowledge base?**
A. Rules and facts
B. Monitor brightness
C. Printer paper
D. Keyboard layout
**Answer: A**
**11. What does an IF…THEN rule contain?**
