Give an answer of about 150-200 words to each of thefollowing three questions. Type your answer right beloweach question. Check your content, grammar andspelling for accuracy before submitting your answers.1. What is a virtual machine? List and describe at least 3main benefits of using virtual machines. Explain youranswer with specific examples with a Windows and/orLinux virtual machine that you know. (15 points).2. What is an operating system (OS)? List and describeat least 5 main functions of an operating system. Explainyour answer with specific examples with a Windowsand/or Linux OS that you know. (20 points).3. List the file systems used by Windows 10 andCentOS Linux. Identify and describe similarities anddifferences in managing files and directories in Windowsand CentOS 7. Explain your answer with specificexamples and commands that you know. (15 points)