a$)$ Different functionalities are put into different layers on the Grid Architecture. What is an architecture? State $3$ uses of an architecture.

b$)$ WhatisaService?WhatismeantbyaServiceOrientedArchitecture$($SOA$)?$State any $2$ potential benefits of SOA.

c$)$ SOA is said to be organised by layers. State any $2$ reasons for layering.