Overview

CSC 342 - Web Technologies

The Internet

  • The Internet is the global network of interconnected computer networks.

  • The Internet protocol suite is a set of communications protocols that the internet uses to link devices worldwide.

  • The Internet is the infrastructure for many information resources and services, for example, email and file sharing.

The World Wide Web (WWW)

  • The World Wide Web (the Web) is one way to access information over the internet.

  • The Web uses Uniform Resource Locators (URLs) to identify resources.

  • The Hypertext Transfer Protocol (HTTP) is the communication protocol for the Web.

  • The Web uses a client-server model to access resources; the client sends a request and the server replies with a response.

The Basic Request/Response Procedure

Internet Standards

  • An Internet Standard is a specification of a technology or methodology applicable to the internet.

  • Internet standards are created by the Internet Engineering Task Force (IETF)

  • An Internet Standard is a Request for Comments (RFC) or set of RFCs

  • Process:

    1. Internet Draft

    2. Proposed Standard

    3. Internet Standard

Web Standards

  • Web standards are technical specifications that define and describe aspects of the Web

  • Web standards consider the interoperability, accessibility, and usability of web pages and web sites

  • Web standards include:

    • RFCs published by the IETF

      • Properly formed Uniform Resource Identifiers (URIs)

      • Proper use of the HTTP

    • Recommendations published by the World Wide Web Consortium (W3C)

      • Markup languages (HTML)

      • Stylesheets (CSS)

      • Document Object Models (DOM)