From the course: CISA Cert Prep: 4 IT Operations, Maintenance, and Service Delivery for IS Auditors

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Cabling and data transmission types

Cabling and data transmission types

From the course: CISA Cert Prep: 4 IT Operations, Maintenance, and Service Delivery for IS Auditors

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Cabling and data transmission types

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- [Instructor] All right, let's talk about cabling and different data transmission types. So, one of the older styles of cabling we don't see much more these days used in LAN technologies was coaxial cable. Now, to make a electrical circuit, you essentially need two conductors, sort of the positive and the negative, if you will. Well, the genius of coaxial cable was we had one conductor that's inside another conductor, another hollow conductor, and so we had one conductor which was the sort of primary one and then this hollow cylindrical conductor, or the other wire, if you will, was sort of wrapped around it. And one wire was inside the other. The inside wire was essentially shielded by the outside wire, which acted as a sort of mild shielding. It was radio frequency communication, that's what we used to actually transmit the information, and it's just a copper or some other conducting material, and it was really available in two main forms, thinnet and thicknet. That's ten megabit…

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