artech house a professionals guide to data communication in a tcp ip world 2004 phần 2 ppsx

... purpose is to make origina- tion and destination addresses available to guide data across networks. IP includes several management protocols that are essential to the operation of the Internet. Together, ... Formats 170 x Contents TLFeBOOK A Professional’s Guide to Data Communication in a TCP/ IP World E. Bryan Carne Artech House, Inc. Boston • London www.art...

Ngày tải lên: 14/08/2014, 13:20

... contain additional facilities that are used to detect and isolate line and equipment problems. 2. 2 Making a Data Call Consider a host (Host A) in a multilocation company that needs a data file to ... that supported many terminals (often characterized as dumb terminals). Server: A data processing device that stores data, organizes and maintains databases, and delivers...

Ngày tải lên: 14/08/2014, 13:20

... token and the fields in a frame containing an IP datagram. The frame consists of an IEEE 8 02. 5 header, an IEEE 8 02. 2 LLC header, an IEEE 8 02. 3 SNAP header, the payload (IP datagram), and an IEEE ... zeros after five ones are removed to leave the original data stream. 4.1 .2. 3 Serial Line Internet Protocol Another encapsulation that can be used to transmit IP datagrams ov...

Ngày tải lên: 14/08/2014, 13:20

... Size Ethernet IEEE 8 02. 3 Token Ring FDDI Preamble Variable 0×AA-AA -A A-AA-AA -A A-AA-AB 0×AA-AA-AA-AA- AA-AA-AA-AA No 0×AA-AA MAC Header Starting delimiter 1 byte No 0×AB JK JK Access control 1 byte ... link X .25 -2 LAP-B Physical X .25 -1 X .21 Packet LAP-B X .21 Data link Physical Packet network Node stack Header Network interface layer Packet LAP-B Header LAP-B Trailer DATA DAT...

Ngày tải lên: 14/08/2014, 13:20

... in IPv4 and IPv6 datagrams. Encapsulating header Authentication header Original datagram D(1) IPSec authentication tunneling datagram D (2) ESP authentication ESP header ESP trailer Original datagram ... and wrapped (encapsulated) in a second IP datagram. I will call this datagram D[D(1) ]2 to symbolize an encrypted IP datagram [D(1)] encapsulated by a second datagram D (2) ....

Ngày tải lên: 14/08/2014, 13:20

... transport overhead to form a frame. The transport overhead contains data that monitors and manages the optical line between the originating and terminating SONET multiplexers. Payloads that originate from ... (SPE). The path overhead contains data that monitors and manages the electrical and optical connections between originat- ing and terminating multiplexers. To the SPE are added...

Ngày tải lên: 14/08/2014, 13:20

... that unbalance the DSL modem operation and require modem retraining. During retraining, the modems are unable to transmit data. To make retraining as fast as possible, G.lite modems store up to 16 ... methods are in use. For instance, in an Ethernet local area network, the letter a, which, in ASCII is MSB 1100001 LSB will be read into the data stream as ⇐1000011 In a Token...

Ngày tải lên: 14/08/2014, 13:20

... When added to the IP datagram, they form the IP frame. Data service unit Part of data circuit-terminating equipment (DCE) serving a digital line. Data terminal equipment A device that creates, ... The act of sharing data among devices. The act of transfer - ring data among data processing machines over communication links under the control of communication protocol(s...

Ngày tải lên: 14/08/2014, 13:20

... beginning and ending of each IP datagram. Server A device that stores data, organizes and maintains databases, and delivers copies of data files to clients on demand. A process that stores and distributes ... Performance Engineering, Robert G. Cole and Ravi Ramaswamy Winning Telco Customers Using Marketing Databases, Rob Mattison WLANs and WPANs towards 4G Wireless, Ramjee Prasad a...

Ngày tải lên: 14/08/2014, 13:20