the internet.

term2! The Internet.

what makes it so essential?

• online banks.
• social networking sites. - communication with people who live far away from you. used by industry buisnesses to promote. professional exchange of ideas.
• blogs. - ideas. promotion.
• online shops. (ebay, buisness, stores) they use it to sell and promote their products.
• online advertising.
• educational purposes. (GOOGLE!) -posting, sharing,
• job seeking.
• entertainment. (Youtube.)

History of the Internet.

How did the internet originate?

the whole idea of a new of communication. (protocol)

video:-

• 1957- batch processing. one things at a time. remote connection needed.
• october4 1957- DARPA. accelerate information sharing.
• foundatins of internet - sceince, military, money.
• packet switching. objects are sent in parts.
• inter-net; the sharing of networks.
• phone companies developed the (something) protocol.
• 1990february- internet up and running.

Who were the people most responsible for creating it?

Donald Davies. -British computer scientist. one of the inventors of packet switching.

Paul Baran. -another inventor of packet switching.

Leonard Kleinrock. -engineer and computer scientist. contributed to the computer networking. mathematical background to packet switching.

What system immediately preceded the internet? What was it's purpose?

the transmission of messages from one computer to the other. this was first done on October 29 1969. This was also the first internet backbone. (the main part of a computer network that can carry the majority of traffic on the network)

What is an IP packet? What is it comprised of?

stands for "Internet Protocol". It is an address of a computer or other network device on a network using IP or TCP/IP. It instructs how a packet of information is to be sent out. It is compried of five classes. (Class A, Class B, Class C, Class D, Class E) example; Class A ranges from 1.0.0.1 to 126.255.255.254 and this supports 16 million hosts on each of 127 networks. (-the numbers with dots in between is the actual internet protocol IP)

What does TCP stand for? How does TCP deal with lost IP packets?

Transission Control Protocol. It checks packets for errors and if there are errors, it asks for a request so that it can re-transmit; it also will return the muliple packets of a message into a proper, original sequence when the message reaches its destination.

used: http://www.computerhope.com/issues/ch001016.htm