Chapter 2 1. What is security and Information security? What is the difference? 2. It has been stated that security is a continuous process; what are the states in this process? 3. What are the differences between symmetric and asymmetric key systems? 4. What is PKI? Why is it so important in information security? 5. What is the difference between authentication and nonrepudiation? 6. Why is there a dispute between digital nonrepudiation and legal nonrepudiation? 7. Virtual security seems to work in some systems. Why is this so? Can you apply it in a network environment? Support your response. Security best practices are security guidelines and policies aimed at enhancing system security. Can they work without known and proven security mechanisms? 8. Does information confidentiality infer information integrity? Explain your response. 9. 10. What are the best security mechanisms to ensure information confidentiality