What are the main differences between clientserver and web

Question

1. What are the main differences between client/server and web applications?
2. Give your opinion on what Thomas L. Friedman is referring to with the words, "Now the real IT revolution is about to begin." Discuss how the beginning, referred to by Friedman, is different from the last couple of decades.
3. Evaluate prototyping as a technique for gathering quality business requirements. Determine the approach to prototyping that would be better suited for emerging technology projects. Determine if a combination of prototyping approaches would be more efficient. Explain your answer.
4. Determine why project risk management is a key component to bringing a project to a successful conclusion. Include an example to support your answer.
5. Reflecting upon your example, describe the relationship between project risk management and cost estimation.