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Here are some videos of this series:
4. Network devices:    • 2021 CUIT112 ITCA 4. Computer network devices  
3. Network topologies:    • 2021 CUIT112 ITCA 3 network topologies-Mes...  
2. Types of computer networks:    • 2021 CUIT112 ITCA 2. Types of computer net...  
1. Basics of Internet vs network :    • 2021 CUIT112 ITCA 1. Basics of computer ne...