Technical Questions 1

4.1 What’s the different between ARPANET and Internet?

Arpanet (Advanced Research Projects Agency net)

ARPANET was a large wide-area network created by the United States Defense Advanced Research Project Agency (ARPA). Established in 1969, ARPANET served as a tested for new networking technologies, linking many universities and research centers. The first two nodes that formed the ARPANET were UCLA and the Stanford Research Institute, followed shortly thereafter by the University of Utah.

Internet

The Internet is a worldwide, publicly accessible series of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP). It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as electronic mail, online chat, file transfer, and the interlinked web pages and other resources of the World Wide Web (WWW).

4.2 What two protocols from the foundation of and govern the way we communicate on the Internet?

TCP (Transmission Control Protocol)

IP (Internet Protocol)

4.3 What are of host, network, and routers in the Internet?

Host: is a computer or end system at network or Internet includes PCs, workstations, servers, mainframes and so on

Network: is a group of computer within local area network (LAN) or wide area network (WAN)

Routers: A router is a device that extracts the destination of a packet it receives, selects the best path to that destination, and forwards data packets to the next device along this path. They connect networks together; a LAN to a WAN for example, to access the Internet. Some units

4.4 What were two of the first applications developed for use over the network?

Telnet

FTP