Interview Questions on UML and Design Patterns

Why to use design patterns?
Give examples of design patterns?
What is UML?
What are advantages of using UML?
What is the need for modelling?
Is it requiste to use UML in software projects?
What are use cases? How did you capture use cases in your project?
Explain the different types of UML diagrams ? sequence diagram , colloboration diagram etc
What is the sequence of UML diagrams in project?
What tools did you use for UML in your project?
What is the difference between activity and sequence diagrams?
What are deployment diagrams?
What are the different object relationships ?
What is the difference between composition and aggregation?
Wheel acting as a part of car ? Is this composition or aggregation?