1.   Which is not the characteristics of SaaS?

2.   When you add a software stack, such as an operating system and applications to the service, the model shifts to _____ model.

3.   Applications that work with cloud computing that have low margins and usually low risk are _____________

4.   _______ is a pay-as-you-go model matches resources to need on an ongoing basis.

5.   _________ computing refers to applications and services that run on a distributed network using virtualized resources.