1. The Internet & Emerging Technologies

2. The Internet

3. Based upon the client/server model Connects over 20 million people in over 100 countries (figures available when the book was written) The Internet, at its lowest levels, is only a set of common protocols that allow data transport. Other services and functions can and do reside anywhere and everywhere on the network.

4. The Internet Network traffic is re-routed around network transport and/or server failures

5. Basic Problems of the Internet Inadequate security given the sensitive and proprietary nature of information that people may want to communicate through the network Technological challenges with one the biggest being a lack of standards Lack of clarity on many legal issues

6. World Wide Web A set of standards for organizing and accessing a vast array of resources via the internet Information is presented as a series of documents - “Web Pages” The series of pages is called the “Web Site” The opening page is called the “Home Page” Content can include text, images, video, sound, etc.

7. Web Browsers An application program specifically designed to allow users to access the “Web” Users utilize point-and-click techniques to access hypertext links Most popular are Netscape Navigator and Internet Explorer by Microsoft Bookmarks allow you to store URL’s for easy retrieval Many search engines are available for locating web sites

8. What is HTML ? HTML stands for Hypertext Markup Language. HTML consists of standardized codes,or "tags", that are used to define the structure of information on a web page. HTML is used to prepare documents for the World Wide Web. A web page is single a unit of information, often called a document, that is available on the World Wide Web. HTML defines several aspects of a web page including heading levels, bold, italics, images, paragraph breaks and hypertext links to other resources

9. What is HTML ? HTML can be compared to word processing. The text in a word processed file can be formatted in various ways. For example, a heading can be bold and in larger font size than the rest of the document. Also, specific words can be italicized for emphasis. HTML is a way to define the formats of text in a web page. However, it goes further by also being able to define placement of graphics and hypertext links

10. What is HTML ? HTML tags are used to define areas of a document as having certain characteristics. The tags used in HTML usually consist of a code in between two "wickets". These codes are called container tags because the formatting described by the tags affects only the text contained between the tags. For example, and are the starting and ending tags used to indicate an area as bold. Therefore, the following markup will yield a sentence with the word "hello" in bold. –Only the word hello will be bold.

11. What is HTML ? HTML tags are used to define heading levels, such as and. Heading levels can go to, with each successive number indicating a smaller heading size. Some other basic HTML tags are: – and used to indicate italics – used to place an image in a document file – used to create a paragraph break

12. Java Developed by Sun Microsystems Java extends the capabilities of web pages to allow for robust applications Extremely popular with internet-based applications because it is platform independent Normally, programs that need access to graphics, network services, the disk, even RAM, use a function call provided as part of the base-level operating system to do so. But in Java, the built-in run-time called a virtual machine provides all these basic services.

13. JAVA Java is interpreted. What this means is that Java source code does not get compiled directly to machine instructions like C++ or FORTRAN does. Instead Java’s source code gets compiled to an intermediate form called byte-codes. Java has built-in support for multi- threaded programming. This is an example of something added to Java that C++ does not support.

14. JAVA Java has built-in support for network programming. This comes in the form of classes that can deal directly with sockets so that connections to servers can be opened. A software component is a pre-built piece of encapsulated application code that can be provided with other components and with hand-written code to rapidly product custom applications. Java components (JavaBeans) makes it easy for a large number of vendors to create reusable software building blocks.

15. How It Works HTTP Step 1: User Requests a Web Page Workstation (running Browser) Web Server

16. How It Works HTTP Step 2: Web Page containing Java Applet is sent back Workstation (running Browser) Web Server HTTP

17. How It Works Step 3: Java VM Starts on Workstation Workstation (running Browser With Java Plugin) Web Server Application Server JAVA

18. How It Works Step 4: Applet Communicates With Application Server Workstation (running Browser With Java Plugin) Web Server Application Server JAVA IIOP HTTP IIOP

19. How It Works Step 5: App Server Talks to Database Workstation Application Server IIOP HTTP IIOP JDBC Database JNDI LDAP

20. Other Companies Using Java Technologies Ernst & Young –Developed a 100% Pure Java application, called Auditor's Workstation (AWS) –The tax department is now able to review audit workpapers and otherwise participate in the audit process from their client's site or wherever they may be--without experiencing bandwidth limitations. This enables Ernst & Young auditors to access this mission-critical application and modify secure and confidential data from remote locations over the Internet.

21. Other Companies Using JAVA Technologies Xerox –The Xerox Problem Management (XPM) application is a key resource in that internal process. XPM is written in the Java language and is part of the core problem-solving system used by internal groups at Xerox to identify and effectively resolve product design, component, or manufacturing problems

22. Interesting Sites Vincinity MapBlast –Allows you to drill down and locate addresses and print maps down to the street level, anywhere in the United States –http://www.vicinity.com/yt.hm?CMD=FILL&F AM=mapblast&SEC=start Switchboard –Allows you to locate address and phone numbers of anybody in the United States (listed numbers only) –You can also locate businesses –http://www.switchboard.com/bin/cgiqa.dll

23. Interesting Sites http://quote.yahoo.com –Get latest market news and stock quotes –Chart stocks from 1 day to 5 years –Obtain latest news for any company –Locate symbols for any stock http://www.dljdirect.com/cgi/inet/qndigest.trn?selection=option_quote_dl &option_symbols=y&symbol=ALTR –Obtain option quotes for Puts and Calls –Hard to find option quotes Silicon Investor Calendar –http://www.techstocks.com/Calendar.html –Calendar of earnings reporting and chat

24. Interesting Sites The MBA Page –http://www.cob.ohio-state.edu/dept/fin/mba.htm –Valuable information for all students –Survival guide is excellent Roget's Thesaurus Personal Development Information Magazines –USA Todayhttp://www.usatoday.com –Wall Street Journalhttp://update.wsj.com –http://www.businessweek.com/contents.htm

25. Interesting Sites Entertainment –The Golf Web HTTP://www.golfweb.com –The National Park Service HTTP://www.nps.gov Coverage of all national parks, what they offer, costs, etc.

26. Other Emerging Technologies Cable Modems –Your cable company becomes your ISP –Coming to Henrico by years end Biometrics –Our biological characteristics can be mapped and digitized