Practical TCP/IP and Ethernet Networking- P18 doc

Ngày tải lên: 03/07/2014, 19:21

Ngày tải lên: 03/07/2014, 19:21

Ngày tải lên: 03/07/2014, 20:20

... 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

... signaling standards and transmission speeds that can be utilized. These include both base band and broadband signaling, and speeds of 1 Mbps and 10 Mbps. The standard is continuing to evolve, and this ... based on this standard is still in use. Ethernet Version 2 or ‘Blue Book Ethernet is, however, still in use and there is a potential for incompatibility with the IEEE 802....

Ngày tải lên: 04/07/2014, 08:21

... 802.3ab standard. These gigabit Ethernet versions are summarized in Figure 4.5. Figure 4.5 Gigabit Ethernet versions 4.4.2 Gigabit Ethernet MAC layer Gigabit Ethernet retains the standard ... by offering a high bandwidth connectivity system to the Ethernet family of devices. Gigabit Ethernet is defined by the IEEE 802.3z standard. This defines the gigabit Ethernet media...

Ngày tải lên: 04/07/2014, 08:21

... out of BootP and for that reason could be perceived as being resident at the same layer as BootP. BootP exhibits a dualistic behavior. On the one hand, it issues IP addresses and therefore ... Internet Layer, as is the case with RARP. On the other hand, it allows a device to download the necessary boot file via TFTP and UDP, and in this way behaves like an application layer protoc...

Ngày tải lên: 04/07/2014, 08:21

... 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

... 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

... 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