You have been hired to set up the network and servers for a new company, using Windows Server 2012 R2. The company is investing in a application critical to the company's business that all employees will use daily. This application uses a back-end database and is highly transaction oriented, so data is read an written frequently. To simply maintenance of the front-end application, users will run it on remote desktop servers. The owner has explained that the back-end database must be highly available, and the remote desktop servers must be highly scalable to handle hundreds of simultaneous sessions. What high-availability technologies do you recommend for the back-end database server and the remote desktop servers? Explain your answer.