Ciw Foundations Guide

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CIW Foundations Study Guide |

Internet Fundamentals
The Internet, sometimes called simply "the Net," is a worldwide system of computer networks composed of other networks and individual computers in which users at any one computer can, if they have permission, get information from any other computer. The internet makes use of the TCP/IP protocol suite (to be covered later) in order to perform connections and communication.

The technical coordinating body of the internet is ICANN. Network Solutions used to be responsible for assigning domain names and IP addresses. This function has now been taken over by Internet Corporation for Assigned Names and Numbers(ICANN) which is a division of the U.S. Department of Commerce. Network Solutions still maintains the master database of all domain names and IP addresses.

Each distinct version of an Internet standards-related specification is published as part of the "Request for Comments" (RFC) document series. RFCs cover a range of topics in addition to Internet Standards, from discussions of new research concepts to memos about the status of the Internet.

World Wide Web
While the internet is a collection of interconnected networks and computers, the World Wide Web is the portion of the internet comprised of massive collections of files and resources that are accessible via a web browser. Client computers using a web browser send HTTP requests to a web server which returns the requested file to the client's web browser as shown below.

Web communication and HTML standards are overseen by the World Wide Web Consortium (W3C).

Physical Infrastructure

In order to handle the enormous amount of traffic that flows on the internet, it has been constructed with backbones. Backbones are high speed networks usually composed of fiber optic cable that are used to connect the smaller networks that make up the…...

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