Monday, 8 January 2018

Task 5

We have been using the internet for such a long time since were born in 21st century, so internet is a common things nowdays. So how about we overview a little bit about internet.


Definition of internet

The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.



THE EVOLUTION OF THE INTERNET



































ADVANTAGES
DISADVANTAGES
Software Downloads:
You can freely download software like utilities, games, music, videos, movies, etc from the Internet.

Virus threat:
Computers attached to Internet are more prone to virus attacks and they can end up into crashing your whole hard disk.

Online Services:
q Perform all your transactions online.
q Can book tickets for a movie, transfer funds, pay utility bills.
q Make a hotel or flight reservation right from your home.

Social Disconnect:
q People now only meet on social networks.
q More and more people are getting engaged with virtual world and drifting apart from their friends and family.

Information resources:
Can find any information on almost any kind of subject that you are looking for by using search engines like Google, Yahoo, MSN, etc.

Theft of Personal information:
Your personal information such as your name, address, credit card, bank details and other information can be accessed by an irresponsible people for their own benefit.













INTRANET





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







            ADVANTAGES                                   
             DISADVANTAGES
          Commercial or confidential data is kept secure within the organization

          High financial cost incurred by the company when initially implementing the intranet

          Email remain private and may also be encrypted

          Connections between an intranet and the Internet potentially compromises security, by allowing virus infections or system hacking.

          High bandwidth. No connection limits unlike the Internet.

          Staff needs training to ensure workers know how to use the system effectively.

          Reliable. The company will have dedicated IT personnel to keep things running smoothly.

          Information overload is another disadvantage because it reduces productivity.





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
          Exchange large volumes of data using electronic data interchange (EDI)


Extranets can be expensive to implement and maintain within an organization (e.g., hardware, software, employee training costs), if hosted internally rather than by an application service provider.

          Share product catalogs exclusively with trade partners

          Security of extranets can be a concern when hosting valuable or proprietary information.

          Collaborate with other companies on joint development efforts


          Jointly develop and use training programs with other companies






















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