Explore the fundamentals of digital investigation in this pre-introductory video lecture. Gain an overview of key networking concepts essential for digital forensics, including user types, communication modes like simplex and full duplex, network topologies such as point-to-point, star, and mesh, and technologies like Ethernet and coaxial cables. Examine the components of wide area networks, application protocols, data packets, network devices, and infrastructure. Learn to recognize network symbols and understand the importance of network addresses in digital investigations. Prepare for a comprehensive digital investigator course by building a strong foundation in these crucial networking principles.