Basics of Data Communication and Computer Networking
This topic introduces the fundamental concepts of data communication and computer networking. It explains how data is transmitted between devices, how networks are structured, and how protocols and models enable reliable communication across the internet.
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Course content
16 sections • 24 lectures • 2h 0m total length
Requirements
- Basic understanding of computers and operating systemsFamiliarity with fundamental IT or computer science conceptsNo prior networking experience required (beginner-friendly)
Description
Data Communication and Computer Networking form the backbone of modern digital systems. These disciplines focus on the transmission of data between computing devices through various media, using standardized rules and architectures. From early communication systems like the telegraph to today’s global internet, networking technologies have continuously evolved to meet the growing demand for speed, reliability, and scalability.
This subject covers essential networking models such as OSI and TCP/IP, transmission media, signal types, encoding techniques, multiplexing methods, and switching techniques. It further explores the responsibilities of different network layers, including the Data Link, Network, Transport, and Application layers. Core internet concepts such as IP addressing, TCP/UDP, and internet services are also discussed.
International organizations like the International Telecommunication Union (ITU) and the Internet Engineering Task Force (IETF) play a crucial role in defining and maintaining networking standards, ensuring interoperability and smooth global communication.