Question

What is sequential and concurrent composite state means?

(a) A concurrent composite state contains a single state diagram composed of sub-states or inner states and the transitions between them

(b) A sequential composite state contains two or more sequential state diagrams in regions separated by dashed lines called concurrent region boundary lines

(c) All of the mentioned

(d) None of the mentioned

I have been asked this question in exam.

The query is from UML State Diagrams in division Unified Modelling Language of Software Architecture

Answer 1

Right option is (d) None of the mentioned

To explain I would say: A sequential composite state contains a single state diagram composed of sub-states or inner states and the transitions between them and A concurrent composite state contains two or more sequential state diagrams in regions separated by dashed lines called concurrent region boundary lines.