By Aftab Ahmad
Data communique ideas for mounted and instant Networks makes a speciality of the actual and information hyperlink layers. integrated are examples that observe to a assorted variety of upper point protocols resembling TCP/IP, OSI and packet dependent instant networks. functionality modeling is brought for rookies requiring uncomplicated arithmetic. Separate dialogue has been integrated on instant mobile networks functionality and at the simulation of networks. in the course of the e-book, instant LANS has been given an analogous point of therapy as fastened community protocols. it really is assumed that readers will be conversant in simple arithmetic and feature a few wisdom of binary quantity structures.
Data communique rules for fastened and instant Networks is for college students on the senior undergraduate and primary 12 months graduate degrees. it could possibly even be used as a reference paintings for pros operating within the parts of knowledge networks, desktop networks and net protocols.
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Additional info for Data Communication Principles For Fixed And Wireless Networks
The user application from a computer entrusts its data packets to the lower layers and then IP makes its way to the other end. The services provided by the IP are encoded as various fields in the packet header. For example, a four bit field is use to designate the protocol version so that the node that receives the packet knows what to expect in this packet. The latest IP version is 6, called IPv6. This version is not only backward compatible with the existing version 4 (IPv4), but also provides a lot more functions than IPv4.
However, 2 Now, the much renowned Dr. Leonard Kleinrock whose multiple volume work 'Queueing Systems' is so deep-rooted in network performance literature that some people spell 'queuing' incorrectly. 40 as seen in an example earlier, this may quicken the packet delivery due to savings in call setup time. Each IP datagram carries enough information to identify it uniquely within the network. Consequently, IP packets from many senders and to many destinations can share the same links and switches.
The presentation layer adds its own protocol information resulting in presentation data or (P-PDU) and passes it on to the next lower layer. In this way, information data travels all the way down to the PHYsical layer. It is the PHYsical layer that actually transmits data on a medium. On the receiving computer, it is again the PHYsical layer that receives data from the medium and passes it on to the data link layer as DLPDU or data link layer protocol data unit. The data link layer strips off the data link header/trailer that was added by the sending data link layer, decodes the protocol information in its header/trailer, performs the relevant functions and passes on the remaining (network layer) PDU up to the network layer.
Data Communication Principles For Fixed And Wireless Networks by Aftab Ahmad