1. Write a paragraph in which you explain the concept of a sandbox and describe how it is used to reduce security risks in client computers 2. Write a paragraph in which you describe the purpose and use of a sniffer program. 3. In one paragraph, explain what an encryption algorithm is and what it can do to provide increased computer security. 4. In two or three paragraphs, explain the differences between a symmetric and an asymmetric encryption system. 5. In one or two paragraphs, explain the difference between an open loop and a closed loop payment card processing system. 6. Write a paragraph or two in which you discuss the micropayments problem and some possible solutions to it. 7. Write a paragraph in which you explain the differences between upstream and downstream business strategies 8. In about 100 words, explain why IT projects (such as Web site development or redesign) are less likely to be delivered on time and within budget than large building construction projects. Include a discussion of how project management software can help IT project managers achieve their goals. 9. Write a paragraph in which you identify the three key elements that must exist in any electronic commerce software package. 10. In a paragraph, outline how the REST approach to Web services differs from that used in protocols such as SOAP