HACK HEAVEN on Instagram: "Part 2 of the OSI Model Now we’re diving into the hardware layers ; how data actually moves through cables, switches, and routers! • Transport Layer: Responsible for end-to-end communication, reliability, segmentation, and managing ports (like TCP & UDP). • Network Layer: Handles IP addressing and routing packets across networks. • Data Link Layer: Deals with MAC addresses and frames inside the local network. • Physical Layer: Transmits bits as electrical, optical, or