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The Internet: at Home and In the Workplace CIS 105 Briefly describe the history of the Internet Describe what is needed to get on the Internet Describe generally what an Internet service provider does Describe the rudimentary functions of a browser Describe how to search the Internet

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The internet at home and in the workplace l.jpg

The Internet: at Home and In the Workplace

CIS 105


Objectives l.jpg

Briefly describe the history of the Internet

Describe what is needed to get on the Internet

Describe generally what an Internet service provider does

Describe the rudimentary functions of a browser

Describe how to search the Internet

List and describe the non-Web services of the Internet

Describe the various types of e-commerce

Discuss e-commerce payments and taxes

Describe how advertising is done on the Internet

Describe what an intranet is and how a business uses it

Objectives


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The Internet

What is it?

Why use it?


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Quick Time Line

  • ARPANET (Advanced Research Project Agency)

    • Functional in 1969

    • Scientists shared information

      • Military or scientific projects

      • Could function if the remainder destroyed (i.e. nuclear war)

      • Four main computers

        • University of California

          • at Los Angeles, Stanford, Santa Barbara)

        • University of Utah

    • Each computer was its own host

  • E-mail capability added in 1972

  • National Science Foundation connected its large network, NSFnet to ARPANET in 1986

    • Resulting network became known as the Internet


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A Little About the Technology

  • Internet service standards (protocols) for communication between Client and Server

  • A message sent over the Internet is divided into uniformly sized packets

    • Each packet labeled with its destination address

  • Transmission Control Protocol/Internet Protocol (TCP/IP)

    • TCP creates and reassembles packets

    • IP handles addressing

      • Ensures that packets are routed to their ultimate destination


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The Internet Service Provider and the Browser

  • An Internet service provider (ISP) provides the server computer and software to connect to the Internet

    • Online service, such as America Online, includes Internet access, Internet service, and a browser

  • When you connect to the Internet, the browser displays a home page


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Local ISP

National ISP

Online Services

Members only

Point of Presence – ISP provides a a local telephone number for Internet Access.

How it works

What is POP?


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Internet protocol address

Numeric address: 4 groups of numbers separated with a period.

The complete, unique address of a Web page

Web page URL begins with http

HyperText Transfer Protocol – allows communication by using links to transfer data between sites

Domain name – address of site’s host computer

Last part of domain name is called a top-level domain

Identifies country or purpose of organization

Internet Addresses

Registered


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Geography of Cyberspace

  • The Domain Name System

    • gov

    • edu

    • org

    • mil

    • com

    • net

    • biz


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Protocol

Domain name

Path

Document name

Trivia

Uniform Resource Locator

What is a URL?

What four components does it include?

http://www.sportsline.com/tennis/index.html


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Plug-ins

  • Software that increases browser functionality

  • Most downloaded from their own Web sites

    • Once downloaded and installed, the browser can handle the new features

  • Most enhance a site’s audio-video experience

    • Shockwave permits viewing sites that include quality animation

    • Adobe Acrobat Reader displays and prints documents created in Portable Document Format (PDF) form


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Web Page Programs

  • Small programs can be downloaded to run in your browser

    • Allow Web pages to perform many tasks

    • Allow dynamic interaction

  • Come in several forms

    • Scripting languages

      • Produce instructions to be interpreted and executed by your browser

      • JavaScript and VBScript are most common

    • Programs embedded in Web page

      • Java applets and ActiveX controls are most common


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Wireless Internet Access

  • Use handheld devices such as pagers, PDAs, or pocket computers to access the Internet

  • Wireless Application Protocol (WAP) – converts Web pages into a format more compatible with limited capabilities of handheld devices


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Searching the Internet

  • Search Engine – lets a user specify search terms

    • Search engine builds database of sites that match those terms

    • Uses spider software to build database

    • Metasearch – searches search engines and builds comprehensive list

  • Internet directory – database is developed by human researchers rather than spider


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Search Techniques

  • Inclusion and Exclusion

  • Wildcards

  • Phrase and Boolean Searches

    • The AND, OR and NOT Operators

    • The NEAR Operator

    • Using Parentheses(growth OR increase) OR development) NEAR (Internet OR Web)

  • Check out: Search Engines



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Exploring Internet Services

  • IRC: Text Chatting in Real Time

  • Instant Messaging

  • Internet Telephony: Real-Time Voice and Video


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File Transfer Protocol

Exchange files

FTP Server

FTP Site

Anonymous FTP

Microsoft

Compression

WinZip

Telnet

Connect to a remote computer

Terminal emulation

Decreasing use

FTP, Telnet


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Internet Portals

  • Your first stop on the Internet

    • Provide personalization to users

      • Site is customized based on information you provide

      • Encourages you to visit the site often

      • MyMCC is an example

    • Provide referrals to other businesses

      • Site contains links to affiliate sites

      • If you click on an affiliate site and make a purchase, the portal receives a percentage of the sale


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Internet Advertising

  • Many advertisements on Web sites are banner ads

    • Originally in the shape of a long rectangle

    • Require the user to leave the current site

  • Other ad types

    • Pop-over ads open a new window on top of your current window

    • Pop-under ads open a newwindow underneath your current window


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  • Newsgroups (Usenet)

Security

  • Portals (MyMCC)

  • Cookies

  • Chat Rooms

  • Instant Messaging



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Evaluating the Information

  • Author

  • Sources

  • Server (who provides)

  • Objectivity (balanced?)

  • Style

  • Purpose

  • Accuracy

  • Currency


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Brick-and-Mortar

Click-and-Order

Click-and Mortar/Brick

B2B (Business to Business)

B2C (Business to Consumer)

C2C (Consumer to Consumer)

Electronic Commerce


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Building the Store Front

Managing Payments

Fulfillment (Delivery)

Attracting & Retaining Customers

Naming a Storefront

Promoting a Site

Building an Online Store


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E-Commerce – the Issues

  • Security

  • Taxes

  • Trust

  • Privacy

  • Cybersquatting

  • Attention


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Intranets

  • A private Internet-like network

    • Internal to a certain company

      • Extranets allow selected customers and suppliers to have access to a company’s intranet

    • Easy to set up

    • Offer many potential uses

    • Can be linked to the Internet


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Setting up an Intranet

  • Easy to set up

    • Most organizations already have a local area network

  • Hardware requirements

    • Server computer handles requests

    • Computer for storing databases and other documents

    • Client computers needed for access to the Intranet

    • TCP/IP protocols must be in place

  • Software requirements

    • Server must be able to process requests from other computers

    • Server must be able to retrieve data from computers that store it

    • Each access computer needs a browser


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Virtual Private Network

  • Technology that uses the Internet as a channel for private data communication

  • Uses tunneling/encapsulation technology

    • Transfers data between two similar networks over an intermediate network

    • Data packets follow Point-to-Point Tunneling Protocol (PPTP)

    • Data embedded in TCP/IP packets carried by the Internet

    • Data packets are encoded before encapsulation

    • When received, they are separated and returned to their original format

    • Provides security for data packets

  • Offers many benefits over a private network

    • Much cheaper than dedicated lines

    • Data is secure

    • Turns remote network administration over to ISP


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Can you explain if asked…

  • Briefly describe the history of the Internet

  • Describe what is needed to get on the Internet

  • Describe generally what an Internet service provider does

  • Describe the rudimentary functions of a browser

  • Describe how to search the Internet

  • List and describe the non-Web services of the Internet

  • Describe the various types of e-commerce

  • Discuss e-commerce payments and taxes

  • Describe how advertising is done on the Internet

  • Describe what an intranet is and how a business uses it


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Questions?

?

?

?

?

?


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Terms to Know: Internet

  • B2B

  • B2C

  • C2C

  • Boolean search

  • Client/Server

  • Domain Name

  • Electronic Commerce (e-commerce)

  • Electronic Mail (e-mail)

  • Extranet

  • FTP

  • HTTP

  • Hypertext

  • Internet

  • Intranet

  • IP

  • ISP

  • Link

  • Netiquette

  • Online Service

  • POP

  • TCP/IP

  • URL

  • Virtual Private Network

  • Web page

  • Web site

  • WWW


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Discussion Questions

  • How has the Internet influenced current events (i.e., September 11, 2001, the war)

  • Do you see this as positive? Negative? Why?


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Group Exercise

  • Go to CIS105 Toolbox/Student Resources/Search Engines (can use favorites)

  • Select 3 search engines (all new or your most used + 2 new)

  • Look up type of technology: (ie. Robotics, PDA, AI, WAP)

  • Notes answering:

    • How are search engines different/similar?

    • Pros/Cons of each (that you can see or know from experience with the search engine)

    • Can print out 1st page of search engine results and make notes on it if you want.

  • Be sure to include names of all people in your group


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Sources

  • Capron; Computers: Tools for An Information Age, 8th Ed. 2003

  • Pfaffenberger; Computers in Your Future 2003

  • Microsoft Clipart


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