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?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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