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This dynamic 4-hour course is designed to demystify the complexities of data communication networks. It provides a comprehensive walkthrough of the concepts, structures, and mechanisms that enable digital communication across different platforms and devices. This course will help you understand what is taking place each and every time you use your computer, phone or device! This course is ideal for IT professionals, network administrators, and anyone looking to deepen their understanding of data communication networks. With content tailored for those who have foundational knowledge in IT and are eager to advance their networking skills. Participants should have a basic understanding of IT, computer operations, and foundational networking concepts. This background will help in grasping the advanced topics covered in the course. After completing this course, learners will be able to identify the various components and their roles within a data communication network. They will distinguish among the major types of network topologies and assess the functions of key network protocols. Additionally, learners will formulate basic strategies for securing a data network, equipping them with essential skills for network management and security.