Internet is a worldwide collection of works that links millions of businesses, government agencies, educational institutions, and individuals.
EVOLUTION OF THE INTERNET
The internet originated as APRANET and have two main goals:
→Allow scientist at different physical locations to share information and work together.
→Function even if part of the network were disabled or destroyed by a disaster.
INTERNET2
→Internet2 is not a new internet but it is a Researcg and Development project.
→to ensure the internet in the future can handle tomorrow's application.
ADVANTAGES AND DISADVANTAGES OF INTERNET
ADVANTAGES
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DISADVANTAGES
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Software download:
-You can freely download software like utilities, games, music, videos, movies, etc from the internet.
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Virus threat :
- Computers attached to internet are more prone to virus attacks.
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Online services:
-you can book ticket,hotel,flight online.
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Social disconnect :
- antisocial
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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.
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Dangers involved when children using the internet:
-Exposed children talking to harmful person and promote them to watch pornography.
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Information resources:
-Can find any information on almost any kind of subject that you are looking for by using Google,Yahoo,etc
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Theft of personal information:
- your personal information can be accessed by an irresponsible people.
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INTRANET
⇨An intranet is an internal network that uses internet technologies.
⇨Network which only available inside an organization or a company.
⇨Intranet generally make company information accessible to employees and facilitate working in groups.
ADVANTAGES
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DISADVANTAGES
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commercial or confidental data is kept secure in the organization.
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High financial cost
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Email remain private and may also be encrypted
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Connections between an intranet and the internet potentially compromises security by allowing virus infections or system hacking.
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High bandwith. No connection limits unlike the internet.
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Staff need training
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Reliable. The company will have dedicated IT personnal to keep things running smoothly.
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Information overload
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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
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DISADVANTAGES
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Exchange large volumes of data using eletronic data interchange (EDI)
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Expensive to implement
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Share product catalogs exlusively with trade partners.
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Security can be concern
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Collaborate with other companies on joint development efforts.
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Jointly develop and use training programs with other companies.
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