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Different Types of Media

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Thread Starter 
I am attempting to have this added to the CCNA Guide that is stickied at the top.

Any advice, comments, or suggestions would be appreciated. Also, if anyone could proofread it, I know I don't have the best grammar.
__________________________________________________ ________________________________

There are three different types of Media:
  • Optical
  • Copper
  • Wireless
Each has a strength and weakness. In this, we will be talking about the different ways they are used, their pro's and con's, and the way one is used in a home, office, and corporate environment.

Copper Media

Copper is the most common media used in Households and in small offices. Copper is in almost every LAN cable, and is a very easy conductor of electricity. Since most LAN cables use electricity to transmit data, this is a prime use for the copper element.
____________________________
I will not go through the Physics or the Periodic Table of Elements like CCNA does in their curriculm.
____________________________
The way most copper media transfer data over a network is through electricity. Voltage is a big factor in that. Voltage is referred to as Electromotive Force, abbreviated as EMF. Electric Force is tied to pressure when particles from electrons and protons are separated from each other. Voltage is sometimes referred to as a capital v (V) or sometimes a capital e (E).

____________________________
Resistance and Impedance is an important thing to consider when choosing copper media.

Resistance is the act of force against another object. Resistance in electrical terms, is how easy it is for electricity to move from one object to another. Objects that offer little or no resistance are called Conductors. Objects that offer no flow, are called Insulators.

All objects that can have electricity to flow through them, have a level of inductance and impedance. Inductance includes conductance and capacitance. Impedance includes the act of resistance.

Attenuation is one of the hardest things for me to explain, so I am quoting CCNA curriculum. If this can not be done, please let me know and I will edit it out, or a mod could remove this part.
Quote:
Originally Posted by Cisco Academy
Attenuation is important in relation to networks. Attenuation refers to the resistance to the flow of electrons and explains why a signal becomes degraded as it travels along the conduit.
Resistance is represented by the letter R and also the Greek symbol omega, Ω, and is often referred to as 'ohm'.

Electrical Insulators are most resistant to the flow of electricity through them. I usually think of something that could burn easily, however that is not always true.

Electrical Conductors are when electricity flows through an object easier then an Insulator. Usually the outer-ring of electrons on a nucleus are packed loosely.

Some examples are:

____________________________

I have skipped over some of the content I deemed not necessary for the curriculum, current, circuits, etc. Stuff I really don't want to go into.

____________________________

All cables operate differently, and all have different specifications.

10BaseT for example. If you break that down you get:

10 | Base | T

10 is the speed at which data can travel over the LAN
Base is the type of transmission. There are two different specs for this: Base and Broad.
T stands for Twisted Pair.

____________________________

Co-Axial cables are comprised of four different parts. Copper Conduct, a Plastic Insulation, a Braided Copper Shield, and a outerjacket.

Copper Conduct is usually a thin piece of copper that carries the electricity and data across a network.

Plastic Insulation, usually is pretty flexible. Made of hard plastic.

Braided Copper Shield, is made of a copper or metallic foil, that allows to try to get rid of some crosstalk, and EMI

The final piece is the outerjacket, which also tries to get rid of EMI and Crosstalk.

To connect the cable, a BNC connection is used. These you can see on a normal day to day basis if you handle networking, electronics equipment regularly.


Soon to come:
Cable Speeds
Coaxial, STP, UTP
Optical
and Wireless

I will right more tomorrow. I am tired... I am still on Module 3.1
Edited by Lige - 12/19/08 at 2:15pm
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Gaming
(23 items)
 
  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1090T Crosshair IV Formula GTX 560 GTX 580 
RAMRAMRAMRAM
G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI  G. Skill F3-12800CL6D-4GBPI 
Hard DriveHard DriveHard DriveOptical Drive
Seagate Hard Drive Seagate Hard Drive Crucial M4 SSD Sony Optiarc 
CoolingOSMonitorMonitor
Corsair H70 Windows 7 Professional x64 ASUS VH242H 23" Monitor ASUS VH242H 23" Monitor 
MonitorKeyboardPowerCase
Samsung SyncMaster 906BW 19" Monitor Logitech G15 Corsair 1K PSU Lian-Li 70A 
MouseMouse PadAudio
Logitech Performance MX Razer Vespula HT Omega Pro+ 
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post #2 of 2
Thread Starter 
This is no longer going to be updated, too much information, too hard to cite, and give credit, among other things.
Edited by Lige - 2/23/09 at 12:30pm
Gaming
(23 items)
 
  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1090T Crosshair IV Formula GTX 560 GTX 580 
RAMRAMRAMRAM
G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI  G. Skill F3-12800CL6D-4GBPI 
Hard DriveHard DriveHard DriveOptical Drive
Seagate Hard Drive Seagate Hard Drive Crucial M4 SSD Sony Optiarc 
CoolingOSMonitorMonitor
Corsair H70 Windows 7 Professional x64 ASUS VH242H 23" Monitor ASUS VH242H 23" Monitor 
MonitorKeyboardPowerCase
Samsung SyncMaster 906BW 19" Monitor Logitech G15 Corsair 1K PSU Lian-Li 70A 
MouseMouse PadAudio
Logitech Performance MX Razer Vespula HT Omega Pro+ 
  hide details  
Reply
Gaming
(23 items)
 
  
CPUMotherboardGraphicsGraphics
AMD Phenom II X6 1090T Crosshair IV Formula GTX 560 GTX 580 
RAMRAMRAMRAM
G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI G. Skill F3-12800CL6D-4GBPI  G. Skill F3-12800CL6D-4GBPI 
Hard DriveHard DriveHard DriveOptical Drive
Seagate Hard Drive Seagate Hard Drive Crucial M4 SSD Sony Optiarc 
CoolingOSMonitorMonitor
Corsair H70 Windows 7 Professional x64 ASUS VH242H 23" Monitor ASUS VH242H 23" Monitor 
MonitorKeyboardPowerCase
Samsung SyncMaster 906BW 19" Monitor Logitech G15 Corsair 1K PSU Lian-Li 70A 
MouseMouse PadAudio
Logitech Performance MX Razer Vespula HT Omega Pro+ 
  hide details  
Reply
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