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What do you mean by a Firewall?

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what is the difference between the 3.0 version 2.0  version?

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what is the difference between the 3.0 version 2.0  version?

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What are the main features that can help us define Web 3.0?

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What are the main features that can help us define Web 3.0?

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What is the defference between URL and domain name?

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Part of the web, that is concealed from the user is called?

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What are the servers that is used to translate domain names into IP addresses called?

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1. What do you mean by meta data in general? 

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1. What do you mean by meta data in general? 

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What is Round Robin DNS and what is the purpose of it?

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What is the new technology developed from web 2.0 to create a high quality content and services?

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Search aggregator is a tool that uses the data of a web search engine to produce its own results. What is the most common name of that tool?

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What do you mean by meta data in general?

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What do you mean by meta data in general?

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What's the advantage of meta search engines 

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What's the advantage of meta search engines 