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Chapter 2 (B) Technology Infrastructure by Mind Map: Chapter 2 (B) Technology Infrastructure
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Chapter 2 (B) Technology Infrastructure

Client-side scripting

Markup Languages

Tags

Formatting instructions

Types of Markup Languages

SGML-Standard Generalized Markup Language

Independent of software application

HTML-Hypertext Markup Language

tags, Format and style, Create relationships-hypertext elements

most commonly used on web today

Linear hyperlink structure, eg. pages of a book

Hierarchical hyperlink structure, eg. home page...

XML-Extensible Markup Language

Similar to HTML, except for 2 respects, not a Markup language w/defined tags, tags don't specify text appearance on the web

Data managment that HTML can't

Purpose of file, Child elements

ESL-Extensible Stylesheet Language, Java

Styling sheets

CSS-Cascading style sheets

Intranets

Intereconnected networks

low cost way for businesses to distribute internal information

Protocols

TCP/IP

FTP

Telnet

HTML

HTTP

Reduce software maintenance

Extranets

connected with suppliers, business partners or authorized users

eg. Fedex-gave customers software to track own parcels

Public Networks

Networks for the public

eg. the Interent

Private Networks

Private leased line

gives added security

Connects intranets to one another

Costly

scaling problem

VPN-Virtual Private network

Extranet

uses public networks

IP tunneling

more secure

Connectivity

Bandwidth

Symmetric

Asymmetric

Upstream

Downstream

Broadbands

ADSL

HDSL

Cable

Telephone

Leased line

Wireless

Bluetooth and Ultra Wideband

Wirelss Ethernet (Wi-Fi)

Fixed -Point Wireless

Cellular telephone networks

FUTURE

Internet2

Semantic Web