Computer Operator Question:

A file is a long sequence of bytes which represent data. Each file has a name and an extension which are separated by a dot (a period). The name, of course, identifies the file. The extension tells the computer what type of data is contained within the file. For example, a file called "Letter to George.DOC" is a Microsoft Word DOCUMENT. The file you are reading now is called "glossary.html". HTML stands for HyperText Markup Language, and it is the file type for web pages.