Question

Consider E-wallets require customers and merchants to sign up and create accounts, then deposit and withdraw money from linked bank accounts. E-wallets like PayPalisvery popular in the worldwide.                     (15marks)1.Whichtype of OperatingSystem areused in E-wallets scenarios?2.Which system call will be used during customers and merchants to sign up and create accounts?3.Which system call will be used deposit and withdraw money from linked bank accounts?4.Show  the  State  Transition  Diagramof  the deposit  and  withdraw  money  from  linked  bank accountsin E-wallets system.5.If  a  malicious  entityaccesses an  E-wallet  systemthen describe  the  state  transition diagram  to terminate the malicious entity’ access.6.Show the types of processes and threads involved in E-wallet systemthrough a diagram.7.Describe the cache coherency in the E-wallet system.