According to your textbook, An operating system is a program that manages a computers hardware.

1 (a) From the computers point of view, describe two roles the operating system plays and discuss why each role is necessary.

(b) Briey describe the responsibilities of the OS for each of the following components of the classic model of computer organization: the CPU; memory; and I/O.

(c) Thecomputingenvironmentwillinuencetherolesthattheoperatingsystemplays. For each environment below, briey discuss the key issue or issues that an OS must address: cloud computing mobile computing real-time embedded systems