1. UML collaboration diagrams show a the interactions among objects b the relationships among classes 2.  The symbol for a multiplicity of zero or more items in UML is a 0..n b * 3.  The assertion of...

1. UML collaboration diagrams show

a the interactions among objects

b the relationships among classes

2.  The symbol for a multiplicity of zero or more items in UML is

a 0..n

b *

3.  The assertion of what must be true before a method is to execute correctly is called its

a argument

b precondition

4.  The assertion of the results that are guaranteed to be true after a method executes is called its

a return value

b postcondition