Concept:The process of starting a computer system is called booting.Explanation:Booting is classified by how the system is restarted or powered on.The two types are cold booting and warm booting.Cold booting occurs when the computer is switched on from a completely powered-off state.Warm booting occurs when the computer is restarted while it is already powered on.Therefore, there are exactly two types of booting.Answer:C. 2