Summary week 2 slides 15-35

- Downloading:
o The process of a computer receiving information
o Depending upon connection speed, downloading can take from a few seconds to several minutes
- URL:
o A web server delivers the Web page to your computer
- Hyperlink:
o Built-in connection to another related Web page location
 Item found elsewhere
on same Web page
 Different Web page
at same Web site
 Web page at a different
Web site
- Search engine:
o Program used to find Web sites and Web pages by entering words or phrases called search text
- Subject directory:
o Search tool with organized set of categories and subcategories
o Lets you find information by clicking links rather than entering keywords

TWELVE BASIC TYPES OF WEBSITES:

- Portal:
o A Web site that offers a variety of services from one, convenient location, usually for free
- News website:
o Contains newsworthy material
o Stories and articles relating to current events, life, money, sports, and the weather
- Information website:
o Contains factual information
o Created by organizations and government agencies
- Business/Marketing website:
o Contains content that promotes products or services
o Allows you to purchase products or services online
- Educational website:
o Offers avenues for formal and informal teaching and learning
- Entertainment website:
o Offers an interactive and engaging environment featuring music, videos, sports, games, ongoing Web episodes, sweepstakes, chats, and more
- Advocary website:
o Contains content that describes a cause, opinion, or idea
- Blog:
o Short for Weblog
o Uses a regularly updated journal format to reflect the interests, opinions, and personalities of the author and sometimes site visitors
o Video blog (vlog), blogosphere, and vlogosphere
- Wiki:
o Collaborative Web site that allows users to create, add to, modify, or delete the Web site content via their Web browser
- Online social network:
o Encourages members to share their interests, ideas, stories, photos, music, and videos
o Media sharing Web site
- Content aggregator:
o Business that gathers and organizes Web content and then distributes, or feeds, the content to subscribers for free or a fee
- Personal website:
o Web page maintained by private individual or family
o Reasons: sharing life experience with the world
or job hunting

Summary week 1 slides 1-15

Internet is a public, cooperative, and independent network. Nowadays, people can find almost everything on the Internet. Internet was functional in September 1969.

- ARPA: Pentagon’s Advanced Research Project Agency

- ARPANET: Networking project by ARPA

Growth of the Internet:

- 1969: 4 host nodes

- 1984: more than 1000 host nodes

- Today: more than 500 millions host nodes

Two ways to connect to the Internet:

- Slow-speed technology: Dial-up access

o Dial-up access: modem in your computer uses a standard telephone line to connect to the Internet

- High-speed connection: DSL, cable modem, FTTP, fixed wireless, wireless modem, Wi-Fi, and satellite modems

o DSL: Digital Subcriber Line, which uses a sophisticated process to pack data onto copper wires

o Cable modem: device that allow a computer to transmit and receive data over certain types of transmission lines

o Wi-fi: wireless fidelity (wireless network)

Ways to access the Internet:

- ISP: Internet Service Provider

- OSP: Online Service Provider

- WISP: Wireless Internet Service Provider

Data travels over the Internet:

- Step 1: Request from your computer

- Step 2: A Cable modem transfers the computer’s digital signals to the cable television line in your house

- Step 3: Transferred to a central cable system

- Step 4: Transferred to a cable operator (ISP)

- Step 5: Through the Internet backbone to the destination server

- Step 6: The server re trieves the data and send it back to your computer

- Domain name: Text version of Internet protocol

- IP address: Number that uniquely identifies each computer or device connected to Internet

- World Wide Web (WWW): A worldwide collection of electronic documents

o Web page: Each electronic document. Can contain text, graphics, audio, video, and built-in connections

o Web site: a collection of related Web pages

- Web browser: Program that allows you to view Web pages

o Home page: The first page that a Web site displays

o Often provides connections to other Web pages

Internet-enabled mobile devices access the Web:

- Use a microbrowser that displays Web pages that contain mostly text