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    Question

    Which types of computers are utilized by organizations such

    as banks, airlines, and railways to manage millions or even trillions of online transactions per second?
    A Laptop Correct Answer Incorrect Answer
    B Tablet Correct Answer Incorrect Answer
    C Server Correct Answer Incorrect Answer
    D Mainframe Correct Answer Incorrect Answer
    E Supercomputer Correct Answer Incorrect Answer

    Solution

    Mainframes  are computers used by organisations like banks, airlines and railways to handle millions and trillions of online transactions per second.Important features of mainframes are:· Big in size· Hundreds times Faster than servers, typically hundred megabytes per second· Very expensive· Use proprietary OS provided by the manufacturers· In-built hardware, software and firmware security features

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