Practical TCP/IP and Ethernet Networking- P22 doc
... Figure 6.12 Binary equivalents of IP addresses and masks used in this example CIDR and the concept of classless addressing go hand in hand since it is obvious that the concept can only ... datagram, measured in bytes, including the header and data. Using this field and the header length, it can be determined where the data starts and ends. This field allows the length of a d...
Ngày tải lên: 04/07/2014, 08:21
Practical TCP/IP and Ethernet Networking- P8 doc
... of this model is to provide a framework for the coordination of standards development and allows both existing and evolving standards activities to be set within that common framework. ... hierarchy of seven layers. Each layer has a defined purpose and interfaces with the layers above it and below it. By laying down standards for each layer, some flexibility is allowe...
Ngày tải lên: 04/07/2014, 08:21
Practical TCP/IP and Ethernet Networking- P33 doc
... such as the governing agency, administrative and technical contact names telephone and 146 Practical TCP/IP and Ethernet Networking fax numbers, and server information. This information can ... at any type of TCP/IP host can log into any other type of TCP/IP host. The local host and remote host may be running totally different operating systems. Rlogin, on the other ha...
Ngày tải lên: 04/07/2014, 08:21
Practical TCP/IP and Ethernet Networking- P35 doc
... Unlike SMTP, proper authentication with a user name and a password is required. POP3 commands include the following. STAT 152 Practical TCP/IP and Ethernet Networking object that contains a single ... 156 Practical TCP/IP and Ethernet Networking LIST message-number RETR message-number DELE message-number NOOP ... SMTP client issuing a ‘Quit’ command. Both sides the...
Ngày tải lên: 04/07/2014, 08:21