Identify the basic functions of Web browsers Install a Web browser Identify the components of Web addresses Describe the functioning of a Web browser Identify considerations in selecting a browser ID: 679988
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Lesson 4:Web BrowsingSlide2
Lesson 4 Objectives
Identify the basic functions of Web browsers
Install a Web browser
Identify the components of Web addressesDescribe the functioning of a Web browserIdentify considerations in selecting a browserUse various browsing techniquesDefine elements of a Web browserConfigure Web browser preferencesIdentify the function of proxy serversTroubleshoot common Internet client problems
CIW Lesson 4
MBSH Mr. Schmidt
2Slide3
Basic Functions of Web Browsers
Provide a way for users to access and navigate Web pages
Display Web pages properly
Provide technology to enable multimedia featuresProvide access to Internet services (such as FTP and e-mail)Perform authentication and encryption functionsCIW Lesson 4MBSH Mr. Schmidt3Slide4
Installing a Web Browser
Windows Internet Explorer 9 (IE9) is packaged with Windows 7
Most browser software is available on the Web or through a vendor CD-ROM
ISPs provide browser software on installation CD-ROMsYou should install the latest version of a browser because it will have the most recent security featuresLook for and install browser updates as they become availableCIW Lesson 4MBSH Mr. Schmidt4Slide5
Web AddressesEvery Web page has a unique address called a Uniform Resource Locator (URL)
URLs typically include the protocol, the Internet resource (server or host name) and the domain name
You enter absolute URLs into your browser’s Address or Location box
Relative URLs can be used for coding Web sitesCIW Lesson 4MBSH Mr. Schmidt5Slide6
How Browsers Work
You enter a URL into the browser
Browser divides the URL into three parts: protocol, server and domain name, and file name
Browser contacts a domain name server to translate server name into an IP addressBrowser uses IP address to connect to serverBrowser uses HTTP to request a page from the serverSome level of authentication takes placeServer sends the requested page (coded in HTML) to the browserBrowser reads and interprets the HTML, and displays the Web pageCIW Lesson 4MBSH Mr. Schmidt6Slide7
Browser Choices
Most popular browsers in use today are Windows Internet Explorer, Google Chrome and Mozilla Firefox
Alternative browsers include:
SafariRockMeltOperaKonqueror LynxCIW Lesson 4
MBSH Mr. Schmidt
7Slide8
Google Chrome
Google uses the greenfield approach to software and Web development
Greenfield – a project that lacks any constraints imposed by prior development Chrome features:Clean interface Automatic crash recovery Multi-threading Improved sandboxing Isolated tabs Privacy mode
CIW Lesson 4
MBSH Mr. Schmidt
8Slide9
Browsing Techniques
Techniques
available to make your browsing sessions more efficient:
Using Bookmarks and FavoritesUsing multiple windows and tabsFollowing linksCIW Lesson 4MBSH Mr. Schmidt9Slide10
Tab Cache
Supplements
Network programming
Download controls Plug-inRendering engine Interpreter Sandbox Thread
Window
Browser Elements
CIW Lesson 4
MBSH Mr. Schmidt
10Slide11
Configuring Web Browser Preferences
Browser
preferences you can configure to suit your working style include:
Browser fontsHome pageHistory folderBlockers for pop-up and pop-under windowsBrowser cache settingsCIW Lesson 4MBSH Mr. Schmidt11Slide12
Proxy Servers
Proxy servers are placed between corporate networks and the Internet
Proxy servers can provide the following services:
Web document cachingCorporate firewall accessBrowsers must be properly configured to work with proxy serversMozilla Firefox can be manually configured to work with a proxy server, or can use a proxy server’s URL to automatically configure itselfInternet Explorer can use a configuration script, or automatically scan, for a proxy serverCIW Lesson 4MBSH Mr. Schmidt12Slide13
Troubleshooting Internet Client Problems
By
adjusting browser functions and settings, you can troubleshoot the following client problems:
Poor renderingSlow connectionNo connectionSlow browser and other system functionsAuthentication issues Disk space usage CIW Lesson 4MBSH Mr. Schmidt13Slide14
Web FeedsWeb feeds –
data formats for delivering Web content that is updated frequently:
RSS (Really Simple Syndication, RDF Site Summary or Rich Site Summary)
AtomCIW Lesson 4MBSH Mr. Schmidt14Slide15
Lesson 4 Summary
Identify the basic functions of Web browsers
Install a Web browser
Identify the components of Web addressesDescribe the functioning of a Web browserIdentify considerations in selecting a browserUse various browsing techniquesDefine elements of a Web browserConfigure Web browser preferencesIdentify the function of proxy serversTroubleshoot common Internet client problemsCIW Lesson 4MBSH Mr. Schmidt
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