Exercise 2 Given that main memory is composed of three page frames for public use and that a program requests pages in the following order: a, c, a, b, a, d, a, b, d, e, f 15 Using the FIFO page removal algorithm, what is the total number of page faults occurred? Write down only number, no letters or word. (e.g: 15) (4 Points) Enter your answer 16 Using the FIFO page removal algorithm, what is the success ratios? Write down only number, no letter or word. (e.g: 80 or 80%) (4 Points) Enter your answer 17 Using the LRU page removal algorithm, what is the total number of page faults occurred? (4 Points) 4 ) Enter your answer 18 Using the LRU page removal algorithm, what is the total number of success ratios? (4 Points) Enter your