Communications, Networks, the Internet and the World Wide Web

Chapter 2

Telecommunications

• What is it?

• Give examples

Communications Network

• What is it?

• What is communications software?

Communications Channel

• What is it?

• What are they made up of?

Digital Signals

• What are they?

• What is an analog signal?

Modem

• What is it?

• Where does this word come from?

• What is an internal modem?

Network Interface card

• What is it?

LAN

• What is a LAN?

• Who does it serve?

• What is a server?

WAN

• What is a WAN?

• Who does it serve and how?

Home Network

• What are they?

School Networks

• Why have schools installed networks?• ?• ?• ?

• What does the server do in a school network?

Wireless Revolution

• What is the wireless revolution that is taking place in education today?

Computer Networks in Education

• What are the benefits?

• What is considered the most important benefit?

Internet

• What networks make up the Internet?

• What are some uses of the Internet?

ARPANET

• What is it?

• How did it come about?

• What is a host?

• Who is NSF and why are they important in the history of the Internet?

Internet and Education

• How many schools are connected to the Internet? ?%

• What is Internet2 (I2)

• Who are members of Internet2?

How the Internet Works

• What are• Packets• Routers• Packet switching• What is TCP/IP

Terms

• ISP

• OSP

• WISP

Ways to Connect

• Dial-up

• CATV

• DSL

• Satellite modem

• PLC

• Public Internet access point

Internet Addresses

• Why use text names?

• Domain name

• Know part A of Figure 2-19 on page 82

World Wide Web terms

• Hyperlinks

• Web page or Webpage

• Web site

• Home page

• URL

• http

• Web server

Web Page

• Hypertext document contains what?

• Hypermedia document contains what?

Three Types of Hyperlinks

• Target hyperlinks

• Relative hyperlinks

• Absolute hyperlinks

Discovery Learning

• What is it?

• How does the WWW facilitate it?

WWW Terms

• Webmaster

• HTML

• Web publishing

• Web browser

Important information

• Mosaic – first graphical web browser

• Microbrowser

• History list

• Favorite or bookmark

Web Searching

• Search tools

• Search engine

• Subject directory

Multimedia on the Web

• What is multimedia?

• What is a plug-in?

• What are graphics?

• What is animation?

• What is an animated GIF?

Multimedia (cont.)

• Audio

• What are some examples of players?

• Streaming audio

• Video

• Streaming video

Multimedia (cont.)

• Virtual Reality • What is it?• What are some examples?