Mainframes and Windows DNA

Before you can learn COMTI, you must learn the Microsoft SNA Server. And before that, you must delve into a little history of mainframes: why they are the way they are, and why it is still important to develop software for them in the year 2000 and beyond.

Note

Apologies in advance to seasoned mainframe veterans; this short section will not do justice to the machines that have changed civilization as we know it. However, I do not claim to be an expert in the mainframe field and am only reporting on recent experiences.

One of the main reasons for the popularity of mainframes in the past and present is their tremendous resilience and robustness. They're analogous to Maytag appliances in the information technology world. ...

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