Question

What does a message mean?

(a) It Passes all communications from one object to another and are represented by message arrows in sequence diagrams

(b) The message goes from the sending object’s lifeline to the receiving object’s lifeline

(c) It is a rectangle containing an identifier with a dashed line extending below the rectangle

(d) All of the mentioned

The question was posed to me in an interview.

Question is from UML Sequence Diagrams in portion Unified Modelling Language of Software Architecture

Answer 1

The correct choice is (a) It Passes all communications from one object to another and are represented by message arrows in sequence diagrams

The explanation: All communications from one object to another are called messages and are represented by message arrows in sequence diagrams.