Post on 12-Jan-2016
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?