Chapter 7:

In this chapter, the concept e-mail has be explored and executed in the ARPANET. Initially, the ARPANET was designed for resource sharing, but scientists still explored the possibility of sending messages through ARPANET. The first electronic-mail delivery was sent in 1972 using a protocol CPYNET hack by the scientist Tomlinson. However by expanding it, created major compilations which forced scientist to create a standardized protocol for sending and receiving email. In 1977, a proposed format for ARPA Network was created. Then with a functional e-mail program, interestingly, sparked a debate on what should be said on the ARPA net. There a few scientists that started flame wars through the ARPANET causing controversy in the MSGroup and ironically made MSGroup the first virtual community.

Chapter 8:

In this chapter,  the scientists were discussing the medium over which was traveled. Bob Taylor and Norm Abramson thought if it may be possible to transmit data packets over a wireless. The first prototype of this implementation is ALOHANET which was constructed at the University of Hawaii. This also lead to the possiblety of having a smaller portable computer sites which was  devised by Roberts and Kahn. The result was disappointing due to the slow speed of the packing switching, but it still intrigued many scientists.  Another radical idea was to create network between the server networks (ARPANET, PRNET and SATNET) together. It would lead to  creation of the TCP protocol and thus the Internet. ARPANET disconnected in the late 80’s. As it became obsolete, it spawned even more networks, e-mail innovation and the creation of Ethernet.

Chapter 5:

In this chapter, Larry Roberts had conceived the Network Measurement Center. This was an organization that was responsible for performance testing and analysis. Its goal was to push the limits of the ARPA network for it  work at its highest performance. Also the scientists were building the interface which is the combination of hardware and software for the Sigma-7 and the IMP. Later on the NWG or the Network Working Group discussed how protocols were used and were utilized. This was very difficult for this group because they were not sure how and what the computers should communicate about. Finally the IMP shipped to UCLA to be installed. The first ARPA network was created and the packet-switching was a success.

Chapter 6:

This first network was connect but, it only consisted of four nodes in the west coast. The scientists ultimate goal was not complete yet. Their desire was to connect to east coast well where MIT was located. But there progressed was hindered by the Vietnam War and their budget had decreased overtime. Despite the distractions, the scientists progressed has not totally stalled. The scientists have improving the performance of the network by troubleshooting and creating traffic. By  1970, there was a second cross-country link that connected MIT and University of Utah. But travel of sending equipment back and forth was difficult and tedious. The ARPA network may have work well on their respected coasts, but communication between the west coast and east coast was still unstable. In the fall of 1971, over 675,000 a day were being sent. Slowly but surely the ARPA has become more stable. It will soon evolve even further in a couple of years.