The Octet Operator Survival Guide — Field Manual 1 · Power & Physical Layer

Physical layer: cabling, connectors, fiber, patch, power, termination

You stop being the person who reboots, reseats, and prays. You become the one who reads the spec sheet, does the amp-draw math before load-in, and knows in thirty seconds whether the link is dead because of the cable, the connector, the optic, or the duplex setting nobody wrote down. The physical layer stops being the place you get humiliated. It becomes the place you're fast.