What are the two types of DOS commands?

The two types of DOS commands are internal and external commands. The DOS commands whose specifications are internally available in the command.com file and can be easily accessed are called internal commands. These are the more commonly used command.

Some examples of internal commands are cls, dir, date, time, etc.

External commands are kept in a separate file from the internal command which helps to fix problems, improve performance, or perform other actions. They are powerful commands and have high resource requirements than internal commands.

Some examples of external commands are Attrib, Tree, More, Edit, Label, etc.