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Sahithyan's S3
1
Sahithyan's S3 — Data Communication and Networking

Introduction to Data Communication & Networking

Sending information from one place to another. Can be done through many mediums. Transmission of signals that will be interpreted as data. An information could be transmitted electronically between two points over a physical connection medium.

  • Type of information
    • Text, image, audio, video, multimedia
  • Direction of information flow
    • Unidirectional
    • Bidirectional non-real time
    • Bidirectional real time
  • Based on number of parties
    • 2 party
    • Multi-party

A system that connects devices for communication.

Examples:

  • Public Switched Telephone Network (PSTN): traditional circuit switched telephone network. used for voice communication.
  • Local Area Network (LAN)
  • Television network
  • Vehicular network: good for better autonomous driving
  • Internet

Used for accessing a network.

Used for routing data between different points.

Used for transmitting data between two points. Can be wires or wireless technologies.

Different architectures, languages, data formats, communication speeds on the sending and receiving ends.

The challenges are solved by standardized protocols, modularization and layering.