Question

Consider a scenario where branches of a Bank are situated in multiple cities and when a user enters his ATM card in an ATM machine then
1. Which Operating System will be used in this scenario in banks?
2. Which system call will be used during ATM card verification?
3. Show the State Transition Diagram of the ATM card verification.
4. If a malicious user enters a duplicate ATM card in other bank then describe the state transition
diagram to terminate the duplicate ATM card.
5. Show the threads involved in this scenario through a diagram

Answer 1

Answer:

Customer (actor) uses bank ATM to Check Balances of his/her bank accounts, Deposit Funds, Withdraw Cash and/or Transfer Funds (use cases). ATM Technician provides Maintenance and Repairs. All these use cases also involve Bank actor whether it is related to customer transactions or to the ATM servicing.