Networks Basics


 A computer network or data network is a telecommunications network which allows nodes to share resources.
 The connections between nodes are established using either cable media or wireless media.
 Computer networks support an enormous number of applications and services such as access to the World Wide Web
 Use of email and instant messaging applications as well as many others.


 File sharing:         Networking of computers helps the network users to share data files
 Application sharing:  Applications can be shared over the network, and this allows to implement client/server application
 User communication:   Networks allow users to communicate using e-mail, newsgroups, and video conferencing etc.


 Like mobile phones, a WiFi network makes use of radio waves to transmit information across a network
 Having no physical connections, it is more vulnerable to attack than wired connections, such as Ethernet.
 Devices that can use Wi-Fi technology include personal computers, video-game consoles, smartphones.
 The computer should include a wireless adapter that will translate data sent into a radio signal.

 Wi-Fi vs. internet

 Wi-Fi and internet are two different things. Let me say it again: they are two different things.
 Wired home networks are less expensive, faster, and more secure than wireless networks.
 You can also combine wired and wireless components in your home network.
 For a Wi-Fi network, the speed of the local network depends on the standards used by the Wi-Fi router (or access point)
 and the connected clients