1. What is protection in Operating Systems? Why does OS provide protection? What is the principle of protection and explain. 2. Consider the access matrix implemented in a global table below: Dir File1 File2 Printer Domain1 Domain2 WRX WRX R P WR RX P Domain3 R X WR Access rights: W - Write, R - Read, X - Execute, P - Print a. Create the same access matrix using access lists for objects. b. Create the same access matrix using capability lists for domains. c. What is the permission of File1 in the form of the access control scheme used in Unix/Linux/MacOS? (Review section 10.6.2) d. If a user is a domain, which domain is the owner of the object File1? e. Add a domain as an object to the global table matrix to allow a process in Domain3 to switch to Domain2.