3. Computer Components: Software, OS and Programming Languages

Which of the following languages are directly executable by a computer's CPU?
What is used in most programs that is a part of a program and guides the user through certain steps?
Panther (10.3), Jaguar (10.2), Puma (10.1), and Cheetah (10.0) are examples of what kind of operating system?
Which of the following was used in programming the first computers?
DDL is used to define the structure of a database, including the tables, columns, and data types that it contains. Its full form is? 

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