An image of a VM can be saved as a file and then be re$-$started when required. This image is often referred to as a VM is the process of simulating the behavior of one computer system or device using software on another computer system. Virtual machines $($VMs$)$ run an operating system and applications as if they were a separate physical machine, making them a software$-$basec of a physical computer. Virtualization software separates the actual physical hardware from the VM instances, providing flexibility ir allocation and management. Virtualization consolidates multiple physical servers with their different $q,$ and into a single physical server in a virtual environment, reducing $q,$ and improving resource utilization. Question $3$ : $1.$Describe one advantage of virtualization in terms of expandability. $2.$Explain how server consolidation helps in reducing IT infrastructure costs. $3.$What is the difference between software$-$based emula