Every program that interacts with people responds to a specific set of commands. The set of commands and the syntax for entering them is called the user interface and varies from one program to another. The DOS operating system makes a distinction between internal and external commands.
Answer:
1. False
2. False
3. True
4. False
Explanation:
1. Folders are the containers to store files
2. The delete option deletes the file
3. Files are moved to recycle bin after being deleted, and can be permanently deleted from recycle bin
4. "MS-DOS was the main operating system for IBM PC compatible personal computers during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system."
<em>source for #4: Wikipedia</em>
RAM is memory in the computer