What is structured cabling? Learn how entrance facilities, equipment rooms, patch panels, copper, and fiber form a maintainable building network—and how to choose, label, and test links.
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Learn when to use an access point or Wi-Fi extender, how dBm converts to milliwatts, and why Ethernet LAN is usually faster, steadier, and easier to test.
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Subnet masking explained with a worked IPv4 example: calculate your local range, then compare the gateway, public IP, upstream device, and application tests to spot NAT type.
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NAT type tester results make sense once you compare local IPs, gateway status, and public IPs to spot public subnet, private subnet, shared carrier-grade NAT, double NAT, and inbound access issues.
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Learn how an internet cable connector, USB port, network adapter, and Ethernet cable work together, then verify a stable 1 Gbps link by checking ports, drivers, negotiation, and real throughput.
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Find the best ethernet cables for your network: compare Cat5, Cat5e, Cat6, Cat6A, Cat6e, and Cat7 by speed, distance, shielding, connectors, and installation needs.
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Learn what an IP subnet is, how prefixes divide address space, and how to calculate network, broadcast, usable hosts, and increments using modern CIDR and legacy Class B terms.
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See how LTE Band 2 and LTE Band 66 use paired uplink and downlink spectrum in FDD LTE, how their frequency blocks overlap, and what Band 66 support means for devices and networks.
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RJ45 connector wiring: use T568A or T568B, select a compatible SFP-to-RJ45 module and cable category, then verify a 100-foot Ethernet cable run for speed, heat, distance, and link negotiation.
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If you’re converting 20 dBm to watts, remember it equals 100 mW (0.1 W). Use the formulas both ways, then place 4G bands, antenna gain, loss, and path effects in a real link budget.
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