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Using The World Wide Web Information Gathering. TCP/IP Communications protocol  how computers communicate or “talk” How does it work?

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Presentation on theme: "Using The World Wide Web Information Gathering. TCP/IP Communications protocol  how computers communicate or “talk” How does it work?"— Presentation transcript:

1 Using The World Wide Web Information Gathering

2 TCP/IP Communications protocol  how computers communicate or “talk” How does it work?

3 TCPIP TCPTCP Data File Data File Packets WWW Route #1 WWW Route #2 WWW Route #3 WWW Route #4 IP Determines Best Route for WWW Travel TCPTCP Data File

4 Internet Services Electronic Communications Information Services Information Retrieval

5 What is the World Wide Web? Graphical portion of the Internet  stores electronic files and web pages Common Terms  Client-Server  Hyperlinks  HTML  HTTP  Browser

6 Understanding Addressing IP Address  Unique  Numbers from 0 to 255  four parts Domain Name  Host  2 nd Level – Registered  Top level com, edu, gov

7 URLs Help computer locate web page’s location server Do not have to type http://  automatically inserted Must be typed exactly  uppercase and lowercase  no spaces between parts  use forward slashes

8 Connecting To The Internet Need connection  Modem Dial-up Cable DSL  Wireless card  Network card

9 Access Providers Organizations that provide access to the Internet Internet Service Providers (ISPs)

10 Common Functions of the Toolbar Back button Forward button Stop button Refresh button Home button Print button Search button

11 Hyperlinks To use - click Text of a different color or underlined May be text or graphics Mouse pointer changes to a hand

12 Getting to a Web Page Type URL into address bar OR Use History List button OR Save as Favorite / Bookmark

13 Other Tasks Print Save Copy To A Document Transferring files

14 Visiting the Internet Cookies Temporary Internet Files History Files

15 Search Sites (Engines) Directory Keyword Search Site Meta Search Engines

16 Boolean Search Strategies Expand or exclude references from search results  And, Or, Not, Near  Truncation Meta-Directory Ranking Stop Word

17 Evaluation of Information Timely Accurate Verifiable Accessible Freedom From Bias Comprehensive Precise Appropriate Clarity

18 Evaluate Quality Of Information Source Current Easy To Navigate Objective Information Error Free

19 Additional Criteria Intended Audience Confidentiality Source of content references Sensitive to health literacy Recognized by other authorities

20 Health Care Information Criteria Health On The Net Foundation  Nonprofit organization  Geneva, Switzerland.  Developed Code of Conduct for providers of health information  Defined set of rules

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