Hello and welcome back to I C d one interconnecting Cisco networking devices. Part one This episode 4 to 3. Converting decimal binary
hydrating Terranova, instructor for this course. In the last video reviewed the classical networks. We went a little miller in depth. This sign of first did
this absurdly covering how to convert decimal binary. And how do we use it for submitting?
So again, we're gonna convert our dismal toe binary using her sudden mask,
we're gonna determine the cider notation from the binary,
as always. What is the cider notation for the Southern mask?
2 35 to 45. That 1 92.0 We'll see if you could for this out.
all right? It is the slash 18 and I will show you why in just a moment here,
it's quick review in a binary. Here we have our 32 bit address
with 4/10 of eight bits.
This is gonna be actually split between the network subbed and host bits.
So if we look at 1 92 that 1 68 65 1 to 65. Well, what does it look like? and binary.
So remember, we have
but 64 is 1 92 So just fill these in with zeros.
1 68 minus 1 28 will leave us 40. So
won't work. This leaves us eight,
And fill the rest in.
No, no, no, no, no, no. Yep.
In 65. Nope. Yes. So now we have one left, so
and killed in auto one. And there is our i p address,
so we'll go ahead. And now we're gonna move into converting the
to converting the subnet mask.
So that was when we looked at the 2 55 to 55 0.0.
Um, So here, don't you have your class full masks,
class a, Class B and classy, respectively.
think of him as ones and zeros again. One's ears. Um, so you're the ones. Determine your network, and sudden it bits zeros determined your host bits.
So if we look at 2 35 0 to 0, we are
What? Her? Excuse me? One.
All these air filled in because that equals 2 55
and this is zero across the board
down here. So here is your slash eight.
And let's say we want to do the 2 55 here.
And this is 111 customer that this equals 2 35
Then this is zero down here
and same thing with this SOS to be 16. So same thing with the certified to try to find out. Zero.
That one will just have ones all the way down here
to be a slash 24 zeros
to determine the cider notation. We're going to add the network and sub net bits or count the ones in the network I d.
So let's say we have this.
I'm just gonna fill in a few of these.
I was a truck. She depends, Um, anyway, so if you count the
once 123456789 10 11
So this would be a slash 11
o. R. Remember this. So that way would look at sub net network
oh, man, this is rough. 21
29 2 30 0 okay. Yeah.
It's like I said I'm not a mass thing. Um
all right, Someone clear those off. We're gonna do this one here.
And now we're going to 1 92 So 1 28 plus 64
So this would leave us with a slash 18.
and we'll look at so 2 52
So I'm just gonna dio one
So 1 92 to 24 to 40 to 48
So this be 16 17 18 1920 2122 slash 22 would be the cider notation on that one.
So you want to go ahead real quick and figure out what 1 92 is? Where did that figure out? What to 24 to 40 would look like.
So I've written out how many sudden at busy she has, but
he needs that. You need to practice. Go ahead and write it on binary. Um,
it is what it actually comes down to when you're doing the practices that we've been doing
otherwise I'm gonna go ahead and push into the next module. Oh,
let's say it was Take the
So let's take this to 41 here.
This will kind of actually tell you where the last number one is
or the last binary one. So 16.
So what? This says Israel. 111 wants to the 16 there.
Then we go. 0000 So let's count this 1 28 1 92
Well, let's try it with 2 24 I guess. Let's see a 10 works.
So let's plug this one into here.
Yeah, that works out
quick. Way to you know your binary to just know how many bits is gonna take Eventually, After doing this a lot, you'll you recognized the 1 28 11 92 to 24 to 42 48 etcetera. You'll be able to count in that kind of reverse,
you know, reverse way there.
Let's go ahead and determine the binary for the sub net to 45 to 55 to 48. You don't need to actually write out all the ones for the 2 50 fives. You know that you can just write out
2 55 to 45 then do the ones and zeros for 2 48 then you guys do zero. Um,
as long as you understand that all the ones air filled in for 2 35
that's fine with me.
So go ahead, pause the video, trying to figure it out.
All rights to 48. Let's do so. We got 1 28
bestie. Better equipment. So we think that is a We're borrowing five bits for the suit for
For that, this is 16
which would leave the host bits 2011 11. Uh,
and those bits. So I'm gonna go ahead. What would the sudden that mass be for a slash 23? So we'll do it in reverse way.
So if you want to positivity on, figured that one out,
so we know it's gonna be too fortified to 55 is slash 16.
And we need to figure out that third act Ted again.
So let's go ahead and figure out. So we need to borrow seven host bits or seven network bets. 1234567
That last one would be this.
It would be a zero. So figure 1 28
1 92 to 24 to 40 to 48
murder that's not going to
this one will allow. Um,
borrowing seven bits like this is in a Class B is fine. You cannot borrow seven Bates in a Class C because, let's say
so. For it to be fired at 2 30 Fired at 25 to 5
and you gotta borrow seven beds. So you're at 2 54
there's only two I p's there.
All right, so move on to the post assessment here. How many host bits are left after for a slash 28 cider? Give a few seconds.
All right. Hopefully your brain in the complete mush by now, this one should be simple.
All right, So in the next module, we're gonna go into implementing I before we're actually gonna break out the routers. Now we're gonna be implementing rip a little bit. Um,
And if you guys are still rusty on that submitting, please use Todd label site to use you to use something to, um, to learn subheading.
And, as always, if you guys have questions, need help. Feel free to shoot me. Message. Otherwise, thank you for watching this module
and look forward to teaching the rest of you.