Assume you are a system administrator for the company and found two usage peaks between 11:30AM to 3:30PM and between 8:30PM to 11:30PM. The CEO asked you to design a system where during these peak hours there will be three levels of users as follows: the users in level 1 can enjoy better response time than the users in level 2, who in turn will enjoy better response time than the users in level 3. Your system can allow all users to still get some progress, but with the indicated preference in place. (10%) (1). If we use a fixed priority scheme with preemption and set the levels as the three priorities, does this scheme can work? Defend your answers. (2). Will a multi-feedback queue work? Defend your answers.