MIdle Test of data communication

Well, Students! it's time for you to take the Middle Test, but how can we be success in Exam, of course we have to learn and study hard, Agree ^-^.

1.Describe data communication model and expalin smartly
2.Describe network model of data communication data and explain it.
3.Give implementation of appiclation of data communication network
4.What is distributed system and give it the sample.
5.Suppose you are a staff of Giant Search Engine Company :
a.Design data communication network from UK Google company to Google Asia
b.How about security to secure the data, information and fund.

More over, try to study with friends if we have difficulty or ask the Lecturer by sending them Email.