Question

Which of the following is considered when broker is compared to iterator pattern?

(a) An iterator provides access to the elements of a collection on behalf of a client

(b) An iterator do not provides access to the elements of a collection on behalf of a client

(c) Broker is not an iterator pattern

(d) None of the mentioned

This question was posed to me in an online interview.

This interesting question is from Mid-Level Design Pattern Categories and Broker Pattern topic in chapter Visibility, Accessibility and Information Hiding of Software Architecture

Answer 1

Correct answer is (a) An iterator provides access to the elements of a collection on behalf of a client

For explanation I would say: An iterator provides access to the elements of a collection on behalf of a client.