Telecommunication, Network & Internet



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DCN introduction

Communications Software

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  • Communications Software
    • Provides error checking, message formatting, communications logs, data security and privacy, and translation capabilities for networks.
  • Network Operating System (NOS)
    • Systems software that controls the computer systems and devices on a network and allows them to communicate with each other.
  • Network Management Software
    • Enables a manager on a networked desktop to monitor the use of individual computers and shared hardware, scan for viruses, and ensure compliance with software licenses.

Protocols

  • Protocol
    • Rules that ensure communications among computers of different types and from different manufacturers.
    • Rules that determine the form of signal being transmitted, encoded, error detection and correction, etc.
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Protocols

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  • OSI 7-Layers Model
    • Serves as a standard model for network architectures and is endorsed by the International Standards Committee. Communication functions are represented in seven layers to promote the development of modular networks. Designed to permit communication among different computers from different operating systems.

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