This course introduces the principles and practices of computer networking. It covers how computers and other devices communicate over local and wide area networks, including the Internet. Students learn about network architecture, protocols (such as TCP/IP), IP addressing, routing, switching, and network security. The course also provides practical skills in configuring, managing, and troubleshooting network devices. By the end of the course, learners will understand how data is transmitted, how networks are structured, and how to maintain reliable and secure network systems.