Updates from January, 2010 Toggle Comment Threads | Keyboard Shortcuts

  • blake 2:45 am on January 22, 2010 Permalink | Reply  

    Networking – OSI Layers 

    Goals

    • Learn the basics of the OSI model.
    • Learn the differences between connection-oriented and connectionless services.
    • Learn about the different types of addresses used in an internetwork.
    • Learn about flow control and error-checking basics.

    Introduction

    This chapter works with the next six chapters to act as a foundation for the technology discussions that follow. In this chapter, some fundamental concepts and terms used in the evolving language of internetworking are addressed. In the same way that this book provides a foundation for understanding modern networking, this chapter summarizes some common themes presented throughout the remainder of this book. Topics include flow control, error checking, and multiplexing, but this chapter focuses mainly on mapping the Open System Interconnection (OSI) model to networking/internetworking functions, and also summarizing the general nature of addressing schemes within the context of the OSI model. The OSI model represents the building blocks for internetworks. Understanding the conceptual model helps you understand the complex pieces that make up an internetwork. What Is an Internetwork? An internetwork is a collection of individual networks, connected by intermediate networking devices, that functions as a single large network. Internetworking refers to the industry, products, and procedures that meet the challenge of creating and administering internetworks. Figure 1-1 illustrates some different kinds of network technologies that can be interconnected by routers and other networking devices to create an internetwork.

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  • blake 2:14 am on January 22, 2010 Permalink | Reply  

    Joomla 1.0 Tutorial – Make Custom Template 

    As part of the Official Joomla Documentation program, we have developed a Joomla Template Tutorial. As well as at the official dev.joomla.org) it is also available in our library in various complete formats, Word, PDF and HTML. This tutorial take you through the steps of making a Joomla template using CSS developed by Dan Cedarholm of simplebits.com.

    In this tutorial, we’ll go through the steps of creating a joomla template. Joomla is an open source Content Management System (CMS) that is freely (literally) available and supported by a large on-line community. Specifically, we will create a template that uses cascading style sheets (CSS) to produce a layout without use of tables. This is a desirable goal as it means that the template code is easier to validate to World Wide Web Consortium (W3C) standards. It will also tend to load faster, be easier to maintain and perform better in search engines. We will discuss these issues in detail later in the tutorial.

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