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    Protocol should take into account the following situations: Messages

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    Design and describe an application-level protocol to be used between an automatic teller machine and a bank's centralized computer. Your protocol should allow a user's card and password to be verified, the account balance (which is maintained at the centralized computer) to be queried, and an account withdrawal to be made (that is, money disbursed to the user). Your protocol entities should be able to handle the all-toocommon case in which there is not enough money in the account to cover the withdrawal. Specify your protocol by listing the messages exchanged and the action taken by the automatic teller machine or the bank's centralized computer on transmission and receipt of messages. Sketch the operation of your protocol for the case of a simple withdrawal with no errors, using a diagram in a 'horizontal' manner. Explicitly state the assumptions made by your protocol about the underlying end-to-end transport service.

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    Solution Preview

    There are two files to your problem. One document contains the sequence diagram of the problem.The second document contains the detail functioning as asked in the problem.

    PROTOCOL DESIGN
    Design and describe an application-level protocol to be used between an automatic teller machine (ATM) and a bank's centralized computer (BCC):
    • user's card and password to be verified
    • the account balance (at BCC) to be queried
    • money disbursed to the user
    • handle all-too-common case in which there is not enough money in the account to cover the withdrawal .

    Step1: Specification

    Specify the protocol by listing the msgs exchanged and the action taken by the ATM or the BCC on transmission and receipt of the msgs

    Msgs from ...

    Solution Summary

    The expert determines the protocol that should be taken into account following situation messages.

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