The Internet originated as ARPANET in September 1969

Advantages

• Online Surveys
  Traditional methods of performing surveys are often relatively slow and expensive compared to online surveys conducted on the Internet 
• Global Audience
  Content published on the World Wide Web is immediately available to a global audience of users. This makes the World Wide Web a very cost-effective medium to publish information. Reaching more than 190 countries.
• Operates 24 hours, 7  days  a week
  You don't need to wait until resources are available to conduct business. From a consumer's perspective as well as a provider's business can be consummated at any time. The fact that the Internet is operational at all times makes it the most efficient business machine to date

Disadvantages

• Virus Threat
  Internet users are often plagued by virus attacks on their systems. Virus programs are inconspicuous and may get activated if you click a seemingly harmless link. Computers connected to the Internet are very prone to targeted virus attacks and may end up crashing
• Pornography
  Pornography is perhaps the biggest disadvantage of the Internet. Internet allows you to access and download millions of pornographic photos, videos and other X-rated stuff. Such unrestricted access to porn can be detrimental for children and teenagers. It can even play a havoc in marital and social lives of adults.
• Spamming
  Spamming refers to sending unwanted e-mails in bulk, which provide no purpose and needlessly obstruct the entire system. Such illegal activities can be very frustrating for you as it makes your Internet slower and less reliable

         
                   Virus Threat                                                Pornography                                                Spamming


Access to intranets and extranets is typically restricted to employees and other authorized user, similar to other company network


                                              

Categories	Internet	Intranet	Extranet
Definition	The largest and most well-known computer network, linking millions of computers all over the world.	Is a network that belongs to an enterprise and is a accessible only by that enterprise’s employees or authorized users.	Is a private network that connects more than one organizations that use Internet technologies to allow suppliers, customers and business partner limited access to their network
Types of users	Provide information for public	Provide information for organization employees	Provide information to suppliers, customers and business partner
Usages	Access all kinds of information	Telephone directories, Employee Information, E-mail	Access data, check status place order, send email
Security	Loose – Security control is lower	Higher – Security control are higher	High – Security control are high

What Can We Use the Internet For?

•       View web pages on the WWW (World-Wide Web).

•       Sending and receiving e-mail messages.

•       Sharing files.

•       Communicating using voice (VOIP) and video (video-conferencing).

      

WWW (World-Wide Web)                        e-mail                          video-conferencing

The Internet Connection