Question

What are the two major units of expert systems?

(a) Knowledge base and performance engine

(b) Performance engine and inference engine

(c) Radio base and performance engine

(d) Knowledge base and inference engine

The question was posed to me by my college professor while I was bunking the class.

Asked question is from Techniques topic in section Cognitive Techniques of Cognitive Radio

Answer 1

Correct option is (d) Knowledge base and inference engine

For explanation I would say: Knowledge base is a large storage of facts and rules obtained from experts of a domain. Inference engine uses the knowledge to deduce new solutions and resolve the query presented by the user.