1) Differentiate the following .
a. Computer Network and Distributed System
b. Connection Oriented Communication and Connectionless Communication
c. TCP and UDP
2) What is encapsulation and decapsulation? Describe how they work in details
3) Explain TCP/IP reference model in detail
4) Define and relate the following terms: Service, Protocol and Interface.
5) What are HUB, Switch and Router in Network connection? How do they apply in LAN and WAN?