OVERVIEW OF THE INTERNET


↠ INTERNET


- Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals


↠ INTRANET

- An intranet ( intra means within) is an internal network that uses internet technologies.
-Network which only available inside an organization or a company.


↠ EXTRANET

- An extranet is the portion of a company’s network that allows customers or suppliers of a company to access parts of an enterprise’s intranet.

- An extranet provides a secure, physical connection to the company’s network.


ADVANTAGES & DISADVANTAGES OF INTERNET,INTRANET & EXTRANET 


The Internet
Advantage
Disadvantage
INTERNET
Software Downloads:
- Can freely download software like utilities,games,music,videos,movies,etc from the internet.
E-mail:
            - People can sent messages. It is delivered instantly to people anywhere in the world, unlike traditional mail that takes a lot of time.
Virus Thread
           - Computers attached to internet are more phone to virus attacks and they can end up into crashing your whole hard disk.
Social Disconnect
          - People now only meet on social networks. More and more people are getting engaged with virtual world and drifting apart from their friends and family.
INTRANET
          - Commercial or confidential data is kept secure within the organization.
          - Email remain private and may also be encryted.
          - Staff needs training to ensure workers know how to use the system effectively.
          - Information overload is another disadvantage because it reduces productivity.
EXTRANET
           -   Exchange large volumes of data using electronic data interchange (EDI)
           -  Jointly develop and use training programs with other companies.
           - Security of extranets can be a concern when hosting valuable or proprietary information.
          -   Extranets can be expensive to implement and maintain within an organization (hardware,software,employee training costs) if hosted internally rather than by an application service provider.

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