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1 |  |  Explain data validation and how it works, and discuss why it is advantageous for both the worksheet designer and the user. |
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2 |  |  Discuss the various security levels that you can choose from in order to protect your Excel workbook. |
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3 |  |  Compare the benefits and limits of working with shared workbooks. |
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4 |  |  What are ActiveX controls and how are the different from form controls? |
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5 |  |  What is a trusted location? How does it affect your Excel files? |
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