Multiple choice technology architecture

Which one of the following is not a participant in Proxy pattern?

  1. Proxy

  2. ConcreteProxy

  3. Subject

  4. RealSubject

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The standard participants in the Proxy design pattern are Proxy, Subject, and RealSubject. ConcreteProxy is not a standard role or participant name defined in the Gang of Four design patterns specification.