Small Review: Info Tech Architecture

things to know about networking infrastructure

Modem

Serves as a connection between an ISP & home network

Router

Switch

What are the mediums for an ISP? (4)

Fiber Optic; Twisted-Pair Copper; Coaxial Cable; Satellite; 5G/4G Cellular Tower

Twisted-Pair Copper Cables are used for what common applications? (3)

Phone Lines (POTS); Longer Reach (DSL); LAN

Twisted-Pair Copper Wires are still short-ranged. Why are they still important for ethernet LANs?

Compatibility with copper ports of switches (no Fiber); Remote devices would each need a local power outlet (no PoE)

List the various Unshielded Twisted-Pair Copper Wires used today (???)

Cat5e; Cat6; Cat6a; Cat7

Why do we need LANs?

They distribute internet

twisted-copper wire cable can carry up to… | How Long?

10/100/1000 Mbps or 10 Gbps; up to 100 meters

A PoE-enabled switch occurs via…

Any twisted-pair copper cable connected between a remote device & switch

A switch needs to be connected to a power adapterless remote device with twisted-pair copper cable so that…

PoE can completely function

What is PoE? Through which mechanisms does it achieve its purpose?

Assembles the availability and security architecture operating the network without multiple power adapters; via a switch and twisted-pair copper cable

What are a few examples of what PoE maintains?

Wi‑Fi access points; VoIP phones; IP cameras; door access systems; sensors; LED lighting

When is PoE used?

When a device lacks a power adapter

What is a LAN?

A network of devices in a limited area