Time
2 hours 16 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Twisted pair cabling is probably the most common/popular cabling type. The cables are twisted together in order to make sure there is minimal interference between the cables. Get Your FREE Resource Guide

Video Transcription

00:04
Hi and welcome to cyber dot i t. My name is Anthony, and I'm your look subject matter expert here For a plus. Today we're gonna be talking about identifying different types of network cables and connectors. So let's go ahead and let's get started. We're talking about different network cables and different network connectors were typically talking about cables and connectors that
00:24
aren't connecting us to devices. Really, They aren't connecting us to input or output devices. They're connecting us to a network there in allowing us to communicate
00:33
two different computers to communicate with servers or communicate and transmit files. We have a few different types of network connectors and they move at different speeds. Eso For this. We're really just going to get a general overview of what they look like and how we can tell the difference between them and
00:49
how we can identify the different ones. We'll get into their exact speeds and specifications a little bit different video,
00:54
one of our first cables. We're gonna take a look at his called twisted pair. Now, this is very common cabling right away. One of these that you'll recognize our Ethernet cables and phone cables. Why is it called twisted pair? It's called twisted Pair because the cable's twisted together and these cables aren't just twisted together just to make life difficult for people who
01:12
have to untwist them toe,
01:14
crimp them into connectors. These cables are actually twisted because the twists cancel out electromagnetic interference. Electromagnetic interference is everywhere. Typically any space that a cable's going to run through, there's gonna be some sort of interference, whether it be from the electrical wires running parallel with it or next to it
01:32
magnets that may be in the same space, or even
01:34
even the lights that are on all the time. All of that is producing electromagnetic interference that can interfere with the signal's going through our wires rather than having these wires go straight. They actually have these twists, which cancel out some of that electric magnetic interference, results in a bit of a cleaner signal and help us in the ability to
01:53
extend how long our cable links are
01:57
so that we can get them in a longer distance and not have to use as many breakpoints. Most of our cables that we're gonna be talking about are you tp their unshielded twisted pair What's the difference between the two unshielded twisted pair is twisted pair cabling that doesn't have a shield on it. This is
02:15
contrary to
02:16
shield the twisted pair STP, which does have a shielding on it. What this is is it's ah, layer of some sort of foil or braided wire, which sort of insulate ce the insulate our cables from external electromagnetic interference and helps us to have a little bit of a better connection. Arm or
02:37
common types of cables that will see as
02:39
just a standard user or plugging into our computers are going to be this unshielded, twisted pair type cabling. So we can imagine we have just our cable with a rubber coating on the outside. And then, in the case of our Ethernet cable, we have our eight cables in pairs of to their twisted around each other, running through our cable.
02:59
Now just because we call them
03:00
Unshielded Twisted Pair doesn't mean that they don't have any covering. They'll typically have. Like in the case of this cable, this is an unshielded, twisted pair cable, but it still has a layer of eso as a layer of rubber on the outside, so that it will be able to
03:16
survive general use. So we have some sort of shield on it, but not the shield we're referring to when we're talking about shield a twisted pair. We're talking about a cable that may have its standard rubber coating and then may have an additional layer of like a braided metal layer that protects us from
03:37
some electromagnetic interference. And then inside of this layer, we have our
03:40
Stainer twisted pair. Lines are unshielded twisted pair. When we are receiving that, electromagnetic interference is going to get Maura of that, it's going to cause more of an effect,
03:52
then a shield, a twisted pair in the exact same environment. Because that additional shield helps block out some of that
03:59
electromagnetic interference. We Now we know the difference between you TP on shield twisted pair and STP shielded twisted pair. But where do we really see these in use in our environment? Well, our standard twisted pair cabling
04:13
normally will see this is you tp unshielded twisted pair. One of our most common ones we'll see with computers will be R J 45. This is an example of our R J 45 cabling here a lot of times will call a thorn et connector in an eight pen, eight wire cable. Uses a color scheme on both ends, which use brown,
04:31
brown, white, orange, orange, white, green, green, white,
04:34
blue and blue white. When I say orange, white and green white, when I mean is each solid colored line also has a pair that is white with that color stripe on it. And we organized these colors in a fashion on both ends of our cable. Depending on what kind type of cable we want, which we'll talk a little bit about later. Sort of our little counterpart
04:55
to R R J
04:56
45 cable is going to be our r J 11 cable.
04:59
Now R J 11 Cable isn't going to be used as much in our ether Internet type environment. Um, this cable is used more now for phone lines to transmit transmit phone information, but it still can be used
05:13
trans to transmit Internet connectivity over modems or over just standard Internet line. We have R R J 45 cable, and then we have our R J 11 cable, and we can see the big difference between the size of the two. They aren't interchangeable by any means when it comes to plugging them into their ports. The R J 11 cable
05:32
is only six. Connect
05:34
depends with only two wires used. So this is the stripped open view, and we can see how we only have our two little wires in here for R J 11 cable again see these less and less common being used to transmit Internet information and will be more seeing R R J 45 cables, so
05:54
we'll just have our
05:55
little cheat sheet here. R J 45 cable, eight pen, eight wire Ethernet and R R J 11 cable six pen to wire again still can be used to transmit Internet connectivity, but we're more off.
06:15
I'm going to see that with Arjun
06:15
45. Connection more often will see this R J 11 cable being used for actually talking back and forth with the with phone lines are twisted pair cabling, especially R R. J 45 cabling is the type of cable that we're going to see in our office is typically be in the walls and the ceilings, and
06:34
it's what allows us to transmit the Internet
06:38
across those short distances where we aren't looking for super high speed. We're not. Well, the higher the speed, the better for us. But we don't really need ah backbone type system. I'm just going to our individual computers unnecessarily so we can use this simple r J 45 type cabling and just put that everywhere.

Up Next

Peripheral Devices and Connectors

A peripheral device or auxiliary device, is generally defined as any device that connects to and works with the computer in some way

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
Instructor