Tuesday, May 15, 2012

History of the Internet

How did the internet originate?
In 1957 a remote connection had to be installed so that the developers can work directly on the computers. The first concept of time sharing came into computer technology where it allowed to share the processing power of one computer with multiple users.
main frame computers- very powerful computers which allows time sharing.
ARPANET: military use of computers they feared that if it was bombed then all the data information would be lost, that is why a ARPANET computer was created so that information was distributed everywhere. The Advanced Research Projects Agency Network (ARPANET), was the world's first operational packet switching network and the core network of a set that came to compose the global Internet. The network was funded by the Defense Advanced Research Projects Agency (DARPA) of the United States Department of Defense for use by its projects at universities and research laboratories in the US.

Who were the people most responsible for creating it?
US Military
Cyclades
Ram Co-operation
NPL Co-operation


What system immediately preceded the internet? What was its purpose?
Lee had actually begun networking computers before the development of the PC, with his Community Memory project in the late 1970s. This system had terminals (like computer screens with keyboards connected to one large computer that did the processing). These were placed in laundromats, the Whole Earth Access store, and community centres in San Francisco. This network used permanent links over a small geographical area rather than telephone lines and modems.

What is an IP packet? What is it comprised of?
Packet of data it has an address which is unique. IP takes care of the communication with other computers. IP address has four numbers seperated by dots.  

What does TCP stand for? How does TCP deal with lost IP packets?
Transmission Control Protocol.When data is chopped into packets and sent off for sending packets and assembling.The TCP re-request that the packet has to be re-transmitted by contacting the computor and the TCP makes sure the packets are received.

Why do computer people like everything in letters?
People don't tend to remember numbers because they prefer to remember letters as it is more easy and convinient as well it is shorter to type and refer to.

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