Introduction to IT and Cybersecurity

### Video Transcription

00:00

Hello and welcome back. This is the part Toot for I p version six basics. It was getting a little long, so I figured I would give you guys a break and we will continue on with the rest of the episode.

00:15

So what we want to do is if we look at an address, we want to add leading zeros two blocks that do not have four hex character's.

00:24

So if you look at the f E 80 below six, we would add three zeros

00:29

leading right. We would leave with for three zeros to make that full four hex character's in that block

00:37

from there. We're gonna go ahead and count the number of blocks that we currently have if we have the double corn. And then we said we were gonna fill up the,

00:45

uh, Phillips until we have eight blocks,

00:49

meaning that

00:51

we would continue to fill it up until you have a block suited to count them.

00:56

Add a zero blocks,

00:59

so I'm gonna go ahead, have kind of walked through that 1st 1 already.

01:03

So you go toe head and we've added

01:07

are six addresses here. Alright, Zeros. Editor zeroes here.

01:11

We added 10 here. 56 maybe stays the same.

01:17

78 Fox releases saying Delta nine got two leading zeros and 56

01:23

eight to get one leading zero.

01:26

So this one is just the leading zeros. This one is your double Cohen, and this one will have both.

01:34

So give me a few seconds deposit video and see if you can figure the zone.

01:40

All right,

01:41

hopefully figured it out. I'm gonna go to this 1st 1 here.

01:46

So first thing we add the zeros under here. We had 10 on the fox, 32. And remember, we gotta have 10 here because it's so me.

01:56

One block. So we fill it up with zeros. The 56 f needs 10

02:01

98. Delta Alfa stays the same for three. D zero stays the same, and the number two gets three leading zeros.

02:09

All right, so from here

02:12

we are just going to expand this out. So we have one too.

02:16

34

02:20

So that just says we need to add four blocks zeros. So now we have one, too.

02:27

3456

02:30

78

02:32

So just fill in those blocks with zeros.

02:36

So this last one. Hopefully didn't trip you guys up. So what I'm gonna do, the way I do it is I will fill in the

02:44

zeros last, just so it's easier to look at.

02:46

So we look here. This is a full four. This is a full four. So the three is going to require

02:53

zeros. And CD, too

02:57

is require 10 as well. From there

03:00

we have one active one,

03:02

234 So we just fill in four again. So one,

03:08

234567

03:14

eight.

03:15

All right, you guys caught that?

03:20

We're gonna move on to the I P version six prefix.

03:24

So the prefix you can think of as it's the same ideas a sub, that idea, and I conversion for what it is you'll see a prefix at the end of an address that will be like a look like a cider notation slash 64 slash 48 slash 96. Something of the sort like that kind of tells you what? That

03:44

what the network portion is of that address.

03:49

Like I said, it is noted with that slash number. The number is the prefix length. So what we're gonna do here is we're gonna calculate the prefix length.

03:55

And if you want to, the quick way to do this is if that number, if this prefix right here

04:01

is divisible by four,

04:04

then you can count the number of bits. So we know that I'm just going to quit maths. We do 16 because four times four

04:13

is each one of these is four. And then we have forced 16

04:15

30 to 48

04:19

64. So right here

04:23

it is our prefix.

04:27

So from there, what we're gonna do.

04:29

Like I said, we have it from down here as well. Same thing.

04:32

What was we're gonna do is here. We're gonna change these remaining bits. Two zeros

04:39

so you can read it out like this. Or we could just do the double colon with slash 64.

04:44

It's a simple Is that

04:46

All right? So now we're gonna get to the prefix practice here.

04:49

I'm gonna go ahead and help you with the 1st 1 here. So the first thing I like to do with this is make sure that I'm for me. It's just easiest to make sure I'm gonna expanded format. It's easier for you to look at it. I don't miss things because the needle accidentally group up,

05:04

you know, blocks when it's not a full block. You know, you don't actually do that, so it's easier to count for me. It's just how I like to do it.

05:11

I'm gonna go through. We have 16.

05:15

30 to 48

05:17

and we have a 64 again.

05:20

So what we do? Cut this off and we're gonna make this a

05:25

These are all gonna be zeros,

05:28

so we can D'oh! You could just do 16.

05:31

We're sorry.

05:33

2500

05:36

zero Alfa Bravo, Delta

05:41

23

05:44

nine. *** Charlie Delta and able to do a double Cullen

05:48

64 Problem. I won't write out to arrest him like this just because my handwriting is atrocious. Um,

05:57

but that we can finish that prefix tomorrow. Just the dotted dust or the double Collins for and with the slash.

06:02

So I'm gonna so remember. Each hex is four

06:08

four bits. This is the total number off bits that is prefixed length.

06:14

So it's divisible by four,

06:15

which I did all of them easy. They're all divisible by four.

06:19

So just figure out where it splits the way I like to do it. Like I said as I expanded out first and then I figured out. So I'll pause the video, give you a few seconds to figure it out.

06:30

Hopefully, you got

06:32

I want to go through this 1st 1 here.

06:35

All right. Hopefully you got this,

06:38

and we're gonna go through here. So I got it all expanded outs and I dont know, 64 but 41234

06:48

And cut the soft and was gonna convert it into

06:55

So are 64.

06:56

So we can just replace that with a double corn

06:59

move on to the next one here.

07:02

So I expanded it all the way out. So we gotta slash 48. So for you, 16.

07:09

32

07:12

48 will cut it off there

07:15

and were replaced with double colon slash 48.

07:19

So again, this would look like 26. 32

07:26

a f

07:27

e four

07:30

36 echo Alfa

07:33

Colon colon slash 48. This would be the prefix I d or the What would be known That kind of like the sub net of i d of vipers four.

07:46

So we're going to the next one here.

07:47

We have it all expanded out. We're on a slash 96 this time. So let's get to the closest 32

07:57

48 64

08:01

80

08:03

96.

08:07

So we can do the double Colin there. Looks like an eight and a double colon slash 96. So you say OK, what do we do with these? Maybe that tripped you up

08:20

so we can still write that. We would basically write this as we would write these four blocks slash 96 because everyone could figure out that you would write in these next two zeros like that would be part of the prefix.

08:35

So you do f e 80

08:39

and we could just do it. Zero in there.

08:43

Be D D

08:46

three

08:46

63 tell to see

08:50

Colon, even though this has the same number of full blocks. Is this one up here?

08:56

We can still do the slash 96 because if you expanded that out, you could figure out that the next two blocks of zeros would be that prefix I d.

09:05

So hopefully this last one didn't trip you up. Too bad.

09:11

We're gonna go over that now.

09:13

So I've gone ahead and fully expanded this here So let's do our thing. 16. 30 to 48

09:20

64.

09:24

And so I know 80 is gonna be passed 76. So from here we go 68

09:30

70 to 76. So we're gonna cut this off

09:33

and will change out this d with a zero

09:39

and then just do the double Colin

09:41

the way this would look, we have 3200

09:46

elf dealt Ah, Bravo four.

09:50

And this would you could do zero, Remember?

09:54

Because there would be more are blocks of zeros down here.

09:58

We would have to do just a double zero here

10:01

a b

10:03

three. And remember this one Normal has a d, but we're going to do a zero

10:09

and do a double corn for the rest slash 76.

10:15

That realized I said I wasn't gonna write dress. He's out because my android so she is.

10:18

But I did. Anyway,

10:22

um, hopefully this helped solidify this for you guys. I really hope you D'oh! I'm gonna include more practice questions and the guides. Please go back through and we're them.

10:35

So quick Post isn't here. Which of these be the shortest way to represent that address? I'll give you a few seconds to think about it here, Make sure not remember the rules that we have, Remember? No.

10:48

All right. Hopefully you guys guts. If the 80 36 a b zero

10:54

Cohen

10:56

because you get to pen out again, we'll want to dio We want to remove these leading zeroes. You just get rid of those first

11:07

and we look for blocks off two or more, and that's gonna one. So we replaced that with Double Colon

11:13

and where moves leading zeros there. But we had to leave one.

11:18

So cf the 80 36 a b zero Colin Cohen F C zero,

11:26

too. Okay, That's right, Mary. This one has two blocks of Collins.

11:31

This one could be shortened up more because of the two bucks of cones. This cannot work because there's only

11:39

one block of zeros

11:41

and this one removed the trailing zero right here. All right. In the next episode, we're gonna look at the difference I p v six addresses.

11:52

And as always, if you guys have questions, need help. Feel free to shoot me. Message. Otherwise, thank you for watching this lesson for the senior s. Um

### Up Next

### CCNA ICND1

This course will enable students to understand virtualization and cloud services, and network programmability related to LAN, access and core segments.

### Instructed By

Trenton Darrow

Instructor