The Physical layer consists of the physical media and dumb devices that make up the infrastructure of our networks. This pertains to the cabling and connections such as Category 5e and RJ-45 connectors. Note that this layer also includes light and rays, which pertain to media such as fiber optics and microwave transmission equipment. Attack considerations are aligned with the physical security of site resources. Although not flashy, physical security still bears much fruit in penetration (pen) testing and real-world scenarios.
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