Networks

By the end of the lesson students will be able to answer following questions:

1. What is a Network, its history and purpose of network?

2. What are the types of network and devices require to build a network?

3. What is topology?

4. What is difference between Internet, Intranet and Extranet?​

5. What is Security and privacy issues for individuals and networks?

   1. Personal Data, Sensitive personal data and anonymity ​

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The Advanced Research Projects Agency Network

​​ARPANET

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Defensive Advanced Research Project Agency Network

DARPANET​

United States of America - Department of Defense​

​US DoD

​Ministry of Defense Russia

Servers are computers that are assigned responsibility for certain tasks for the whole network, and provide services to other computers (the clients)

​Server

Client computers are regular desktop, laptop, or mobile computers that connect to a network to use its services.

​Client

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Types of Servers over a network

File Server : store users' files and data, and control access to them.

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Application Server: perform a similar function for software applications, which can be delivered to any client computer on the network.

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Print Server: manage any printers attached to the network, controlling access to them and maintaining a queue of documents waiting to be printed.

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Database Server: hosts this information and manages access to it

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Authentication Server / Domain Server: is responsible for processing login requests and determining whether a user should be allowed access to the network and its resources.​​