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DATA COMMUNICATIONS is about the transmission of digital signals between two or more separately powered devices through a medium which come with various forms. With various possible interference and noise during the transmission within the medium of transmission between devices, the maximum transmission rate of a message is interrelated to signal power and noise within the channel of transmission. It is the objective for all communications system to provide the highest Signal to Noise Rate (SNR) as possible.

Typically

 
  • Local Area Networks
  • Wide Area Networks
  • Wireless Area Networks
  • Remote Access Systems