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

Using The World Wide Web

Information Gathering

TCP/IP

Communications protocolhow computers communicate or “talk”

How does it work?

TCPIP

TCP

Data File

Data File Packets WWW Route #1

WWW Route #2

WWW Route #3

WWW Route #4

IP Determines Best Route

for WWW Travel

TCP

Data File

Internet Services

Electronic CommunicationsInformation ServicesInformation Retrieval

What is the World Wide Web?

Graphical portion of the Internetstores electronic files and web pages

Common Terms Client-ServerHyperlinksHTMLHTTPBrowser

Understanding Addressing

IP AddressUniqueNumbers from 0 to 255 four parts

Domain NameHost2nd Level – RegisteredTop level

com, edu, gov

URLs Help computer locate web page’s location

server Do not have to type http://

automatically inserted Must be typed exactly

uppercase and lowercaseno spaces between partsuse forward slashes

Connecting To The Internet Need connection

Modem Dial-up Cable DSL

Wireless cardNetwork card

Access Providers

Organizations that provide access to the Internet

Internet Service Providers (ISPs)

Common Functions of the Toolbar

Back button Forward button Stop button Refresh button Home button Print button Search button

Hyperlinks

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

Getting to a Web Page

Type URL into address bar OR Use History List button OR Save as Favorite / Bookmark

Other Tasks

PrintSaveCopy To A DocumentTransferring files

Visiting the Internet

CookiesTemporary Internet FilesHistory Files

Search Sites (Engines)

DirectoryKeyword Search SiteMeta Search Engines

Boolean Search Strategies

Expand or exclude references from search resultsAnd, Or, Not, Near Truncation

Meta-Directory Ranking Stop Word

Evaluation of Information

Timely Accurate Verifiable Accessible Freedom From Bias Comprehensive Precise Appropriate Clarity

Evaluate Quality Of Information

Source Current Easy To Navigate Objective Information Error Free

Additional Criteria

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

Health Care Information Criteria

Health On The Net Foundation Nonprofit organizationGeneva, Switzerland.Developed Code of Conduct for

providers of health information Defined set of rules