What are the definitions and applications of hacker, e-mail, text flow in columns, publishing applications, desktop publishing components, and spreadsheet operators?

Here are the answers to the objectives:

7. B) A highly skilled computer expert capable of breaking into a computer system and networks using bugs and exploits is referred to as a hacker.

   $$\boxed{\text{B. hacker}}$$

8. D) The Internet technology that brought the basic services of the post office to our desktop and palmtop uses an electronic distribution facility commonly called e-mail.

   $$\boxed{\text{D. e-mail}}$$

9. A) When text is typed into one part of a column and continues into the next column, it starts from the top of the new column. This is standard text flow in multi-column layouts.

   $$\boxed{\text{A. top of the new column}}$$

10. D) Adobe PageMaker and MS Publisher are examples of publishing applications. They are used for creating and designing layouts for print and digital media.

    $$\boxed{\text{D. publishing application}}$$

11. B) Desktop publishing software typically combines page layout, graphics, and word processing functionalities. A spreadsheet application is not one of the core components that combine to form desktop publishing software.

    $$\boxed{\text{B. Spreadsheet}}$$

12. C) In spreadsheet applications, the ampersand (&) symbol is used as the concatenated operator to join text strings or cell contents.

    $$\boxed{\text{C. \&}}$$

13. B) To move to a specific cell in a spreadsheet worksheet, you enter the cell's address (e.g., A1, B5) into the Name Box.

    $$\boxed{\text{B. Name Box}}$$