Exercise 4: Chapter 2 Review questions

1. Describe the IP protocol. What is DNS?
2. Describe the TCP protocol. How is it related to the IP protocol?
3. Differentiate between intranets and extranets.
   
4. Describe the different elements of HTTP protocol.
   
5. What do you know about building e-business applications as an Intranet, Extranet, Web portal, B2B, B2C or Virtual Private Network (VPN)? Find some examples on the Web.
6. What role can a VPN play in business-to-business e-commerce?