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 the internal commands. These are the more commonly used command.

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

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

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