student Name Problems Solve two problems from 1, 2, 3, one problem from 4 and 5, and two problems from 6, 7,8, (each problem is worth 12 points). Problem 1 Consider a computer system with four users: George, Bob, Alice and Cathy. George owns the file gwork, which can be read and written by Bob and Alice and read by Cathy Alice and Cathy can read the file bwork, which is own by Bob. Alice owns the file awork, written, appended to and executed by Bob. Cathy owns the file cwork, which read, written to, appended to by any of the others except Alice, who can read it, write, append to it and executed. The owners of the files can read, write, execute and append to their files. can read all the others cannot be Create the corresponding Access Control Matrix. Use: w write r read e = execute a -append o own, owner can read, wirite, execute and append