Worksheet N° 1 Internet and its history.

What is TCP /IP?

Multiple protocols tied together into one thing that is call TCP/IP. The main protocols in this set are the TCP(Transmission control protocol) and IP (Internet Prtocol). Make posible services like, FTP, email, and others in computers that do not belong tho the same network.


Created by Vinton Cerf and Robert E. Kahn, in the 1970s. It was introduced in ARPANET, the first wide area network (WAN), made by DARPA, an agency of the United States Department of Defense, and the predecessor of the Internet.


Is a protocol that control rounting of information to differents computers or devices in the network.It deals with IP adresses, subnetmask etc.

Allows two computers to figure out where the other is, so they can start communication. IP is a Routable Protocol; this means that the networks are divided into subnetworks and that each network must have a router which permited the device interact with another subnetworks.

What is Transmission Control Protocol?

Is a protocol that deals with the communication between the computers once they had started talking to each other. It allows two hosts to establish a connection and exchange data. TCP guarantees delivery of data,verify that data is not lost during transmission and also guarantees that packets are delivered in the same order in which they were sent.

This packets are very importants in windowing. What is windowing? Is a process by which a computer send info to the server computer. The data is break down is small parts called packets. First computer start sending packets in groups to the second computer. This groups will double the amount as time passes.


"Network or Internet is considered a great ally when it promotes creativity. We also use the Internet to access information, communicate, store data and play."TonyBuzan

TCP/IP and Subnet Masking