Chapter 1, Problem 1HA1

Explanation of Solution

Introduction:

Presently, the internet pervades everyone’s lives, delivering information to them no matter where they are.

The Internet is the worldwide system of interconnected computer networks to link devices globally using the Internet Protocol.

Generally, the Internet is a network of networks consisting of public, private, government, academic and business networks of local to global space, linked by wireless, optical and electronic networking technologies.

The Internet carries a wide range of information services and resources as the applications of the electronic mail, file sharing and telephony.

History of Internet:

• Creation of the agency “Advanced Research Projects Agency (ARPA)” in 1958 is the most important moment that led to the construction of the present day Internet.
• In 1962, ARPA and Massachusetts Institute of Technology (MIT) suggested to connect computer machines to keep an active communications network. This network later came to be known as ARPANET or ARPA network.
• Initially, ARPANET was created for defense purpose only.
• In 1965, data transmission was made possible with the help of Packet switching.
• In 1969, an Interface Message Processor (IMP) was developed and it is considered to be early form of routing device.
• In 1981, the first local area network was the Stanford University Network connecting workstations.
• In the same year, the National Science Foundation (NSF) expanded ARPANET to national computer science researchers.
• In 1983, ARPANET implemented the Transmission Control Protocol (TCP) separated the military network and assigned a subnet for public research...

Explanation of Solution

Most surprising thing learned about Internet:

• The most surprising thing learned about Internet is the threat it is facing, for example, cyber-attacks.
• A cyber-attack is an attempt for exposing, altering, disabling, destroying, stealing, or gaining unauthorized use or access to the Internet asset...