Disk Operating System -or- Denial of Service -or- Dozing Off Soon
The term "DOS" can refer to any operating system, but it usually refers to MS-DOS. It has been widely acknowledged that DOS is insufficient for modern computer applications, due to its limitations: it's a 16-bit operating system that doesn't support multiple users or multitasking.
The term "DoS" (when spelled with a lower case "o") refers to "Denial of Service." For more information on a Denial of Service attack, see DDoS.
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NetLingo Classification: Net Programming