What are the default file extensions for ASCII text file?

txt is a common choice.

txt

rar

There are lots of archive types: zip is most commonly used and the simplest archive formatrar is a good format used mostly on windowsThere are also many other archive formats, like:tar - it just...

There is no answer for this, because it is the wrong question. A files extension doesn't matter to the file, it only exists so that the Operating System (OS) knows what application to open the file...