Computer Networks: A Systems Approach, Fifth Edition by Larry L. Peterson

By Larry L. Peterson

This best-selling and vintage ebook teaches you the most important ideas of laptop networks with examples drawn from the genuine global of community and protocol layout. utilizing the web because the fundamental instance, the authors clarify a variety of protocols and networking applied sciences. Their systems-oriented method encourages you to contemplate how person community elements healthy right into a better, complicated procedure of interactions. no matter what your point of view, no matter if it's that of an program developer, community administrator, or a fashion designer of community gear or protocols, you are going to come away with a "big photo" knowing of the way sleek networks and their functions are outfitted. *Completely up to date content material with elevated insurance of the subjects of maximum value to networking pros and scholars, together with P2P, instant, defense, and functions. *Increased specialize in software layer concerns the place leading edge and interesting examine and layout is at present the heart of realization. *Free downloadable community simulation software program and lab experiments handbook to be had.

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Example text

Internet users represent the largest class of people who interact with the Internet in some way, but there are several other important constituencies. There is the group of people who create the applications—a group that has greatly expanded in recent years as powerful programming platforms and new devices such as smartphones have created new opportunities to develop applications quickly and to bring them to a large market. Then there are those who operate or manage networks—mostly a behind-the-scenes job, but a critical one and often a very complex one.

Instead, they are able to carry many different types of data, and they support a wide, and ever growing, range of applications. Today’s computer networks are increasingly taking over the functions previously performed by single-use networks. This chapter looks at some typical applications of computer networks and discusses the requirements that a network designer who wishes to support such applications must be aware of. Once we understand the requirements, how do we proceed? Fortunately, we will not be building the first network.

We briefly describe the architectures defined by the IETF and ISO shortly, but first there are two additional things we need to explain about the mechanics of protocol layering. 11 when one of the application programs sends a message to its peer by passing the message to RRP. From RRP’s perspective, the message it is given by the application is an uninterpreted string of bytes.

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