In: Computers and Technology

Submitted By clynnridge08
Words 524
Pages 3
Carol Ridgeway
Kaplan University

IT331 Technology Infrastructure
Professor Howard Weinraub
Unit 3 Assignment

May 7, 2013

Twisted Pair Cables is a pair of wires that are twisted together to provide protection against crosstalk and noise that is generated by the adjacent pairs that forms a circuit to can transmit data. There are two basic types of twisted-pair cables, unshielded twisted pair, UTP, and shielded twisted pair, STP (Cisco, 2003). Coaxial Cables have a hollow outer cylindrical conductor that is surrounded by a single inner wire that is made of two conducting elements, copper and a copper braid or metallic foil. The copper conductor is surrounded by a layer of flexible insulation that has a woven copper braid, or metallic foil, that helps to reduce the amount of outside interference. And finally, a cable jacket covers the shield (Cisco, 2003). A fiber optic cable contains strands of glass fibers that is inside of an insulated casing that is designed for long distance and very high bandwidth, gigabit speed, network communications by using pulse of light to carry a signal (Scocco, 2006). Wireless signals are electromagnetic waves that travels through the air. To receive the signals from the access point the computer, or laptop, must have a wireless adapter card, or wireless NIC, installed. Wireless signals use portions of the RF spectrum to transmit voice, video, and data.

Satellite radio provides uninterrupted services to millions of listeners around the world without the need of changing channels. It uses the technology of satellites to deliver high quality audio signals that are broadcasted by communications satellites in digital form. The key components of a satellite radio infrastructure are satellites, ground repeaters and radio receivers. A radio receiver contains an electronic serial number, or a Radio ID that…...

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