1.) Describe various virtualization architectures and discuss pro & cons each with specific real-life examples to support your answers. Then explain why virtualization technologies are so vital for today computing/or even your everyday life ? 2.) Consider a new startup wants to offer a cloud storage and sketch out a three-tier solution to the provision of their underlying distributed storage service that consists of 3 main sub systems, web front-end, storage and user subscription info. Do physical model, architecture model and fundamental models, Use these to illustrate the benefits and drawbacks of a three-tier solution considering issues such as performance scalability, dealing with failure and also maintaining the software over time. Make your assumptions if necessary such as capacity of hardware or storages so that you can calculate how many of those DS elements. Say if they want to grow the company into 50 million dollars in 5 years. Assuming the business requirements are a. 5 cents for advertise revenue for each unpaid subscriber b. each unpaid subscriber will get 4GB free and paid one get 100 GB. c. $10 per month per each paid subscriber d. 10 % paid subscriber vs 90% unpaid subscriber