1. What are the purposes of switches in CLI/DOS commands? Identify and explain what any two are in the COPY command.

2. How many internal commands are in CLI/DOS today? List any five internal commands. How many external commands are in CLI/MS-DOS today? List any five external commands.

3. What are the *technical* differences between .COM .EXE and .BAT files?

4. How much third party support is available for learning how to use CLI/DOS today? And what is that? Label as A. Give the URL of three Web sites that support CLI/DOS like how to use a command as their primary goal. Label as B C D.

5. Why is backwards compatibility important in a business environment? How does MS-DOS support that?