Computer Networking with Internet Protocols and Technology
It is also possible to use the domain system to store information about users, mailing lists, or other objects. Remote terminal connections use another mechanism still. When it is necessary to send a command (e.g. to set the terminal type or to change some mode), a special crossgrid.org character is used to indicate that the next character is a command. If the user happens to type that special character as data, two of them are sent. This thesis analyses the evolution of British computer networks and the Internet between the years 1970 and 1995.
Since they are both doing file transfers, one end of the connection involves the well-known port number for FTP. The only thing that differs is the port number for the program that the users are running. Generally, at least one end of the connection asks the network software to assign it a port number that is guaranteed to be unique. Normally, it’s the user’s end, since the server has to use a well-known number.
17 Client Software
The numbers allow the user program to respond unambiguously. The rest of the response is text, which is normally for use by any human who may be watching or looking at a log. In this case, the mail server could get the information by looking at the message itself.
- TCP/IP is the driving force of the Internet, and thus it is the most popular set of network protocols on Earth.
- However this doesn’t say how the gateways should find out about the routes.The gateways can’t depend upon this strategy.
- (SMTP is “simple mail transfer protocol.) We assume that a computer called TOPAZ.RUTGERS.EDU wants to send the following message.
- Officially speaking, the Internet protocol documents are simply standards adopted by the Internet community for its own use.
- The rest of the response is text, which is normally for use by any human who may be watching or looking at a log.
Ethernet is a family of related protocols which deal with how data is sent along ethernet cables – it isn’t a single protocol. There are lots of parts to the ethernet protocol family, which include how the hardware is managed, as well as how data is sent and received and how data collisions are managed. When we use our web browser to access a web page, it is very unlikely that we know the IP address of the web-server hosting the required web page.
Most IP experts recommend that individual computers should not try to keep track of the entire network. Instead, they should start with default gateways, and let the gateways tell them the routes, as just described. However this doesn’t say how the gateways should find out about the routes.The gateways can’t depend upon this strategy.