1. What is the distinction between a network and an internet?
2. Give two examples of client-side activities on the Web. Give two examples of server-side activities on the Web.
3. Protocol layering can be found in many aspects of our lives such as air travelling. Imagine you make a round-trip to spend some time on vacation at a resort. You need to go through some processes at your city airport before flying. You also need to go through some processes when you arrive at the resort airport. Show the protocol layering for the round trip using some layers such as baggage checking/claiming, boarding/un-boarding and takeoff/landing.
4. In an internet, we change the LAN technology to a new one. Which layers in the TCP/IP protocol suite need to be changed? Explain.
5. Assume that an application-layer protocol is written to use the services of UDP. Can the application-layer protocol uses the services of TCP without change? Explain.
6. When we say that the transport layer multiplexes and de-multiplexes application-layer messages, do we mean that a transport-layer protocol can combine several messages from the application layer in one packet?
7. Assume we want to connect two isolated hosts together to let each host communicate with the other. Do we need a link-layer switch between the two? Explain.