Which of the following is required to allow multiple servers to exist on one physical server? SY0-401 Which of the following is required to allow multiple servers to exist on one physical server? A. Software as a Service (SaaS) B. Platform as a Service (PaaS) C. Virtualization D. Infrastructure as a Service (IaaS) Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+