Hello,

Although decent when it comes to networking concepts, it has been a while since I've done anything with serious with it. I do remember quite a bit, at least I thought so. A friend of mine today threw a question my way that left me...umm...feeling dumb. The question was, "give me a c-block of IP addresses"

Although the question seemed pretty easy to anyone who understands networking, struggled.....to make things worse, I couldn't find a damned thing explaining it. So, of course, I turned to TWW for help.

Any thoughts, fellas?

6/27/2010 9:24:14 PM

google class C subnet. i'm assuming that's what he meant

y=static
x=not static

y.x.x.x = Class A, /8 subnet
y.y.x.x = Class B /16 subnet
y.y.y.x = Class C /24 subnet

basically.

[Edited on June 27, 2010 at 9:28 PM. Reason : asdf]

6/27/2010 9:27:06 PM

Although I understand what you typed, he rejected my explanation.

Class C which uses the first three octets as the network ID (static) with the last octet being the host ID. He rejected my response.

sigh...anyone wants to take a jab at it?

6/27/2010 9:32:31 PM

why did he reject your response, exactly?

6/27/2010 9:36:41 PM

He said my answer is incorrect...refused to give explanation. I have to believe him since he has a Masters in Networking and works for Cisco.

I know there are plenty of networking experts on here, someone offer an explanation!!!!

6/27/2010 9:39:26 PM

Only certain combinations of addresses are legitimate "C-block" addresses:

http://en.wikipedia.org/wiki/Classful_network

Bitwise:

Class C
192. 0. 0. 0 = 11000000.00000000.00000000.00000000
223.255.255.255 = 11011111.11111111.11111111.11111111
110nnnnn.nnnnnnnn.nnnnnnnn.HHHHHHHH

so, 192.0.0.0 through 223.255.255.0 class C's are all legitimate

This does not include the private range of 192.168.0.0 through 192.168.255.0

[Edited on June 27, 2010 at 10:02 PM. Reason : private range]

6/27/2010 9:59:21 PM

yeah i think he's just being a dick about it and looking for some detail that you/we haven't said that doesn't matter

lol

[Edited on June 27, 2010 at 10:01 PM. Reason : nvm the link, you already posted it haha]

[Edited on June 27, 2010 at 10:04 PM. Reason : moar]

6/27/2010 10:00:10 PM

^ & ^^ thank you, gentlemen....I think I see the light at the end of the tunnel now!

'ppreciate it!

6/27/2010 10:23:01 PM

lol @ this thread

6/27/2010 10:34:31 PM

Quote :

"since he has a Masters in Networking"

Quote :

"yeah i think he's just being a dick about it "

6/27/2010 10:58:31 PM

Sounds like some BobbyDigital shit right there.

6/27/2010 11:01:03 PM

haha, i was switch guy. all i ever knew was speed and duplex on ethernet ports.

robster does real shit.

6/28/2010 7:41:16 AM

BobbyDigital only gives people a hard time if you're evan

6/28/2010 8:48:19 AM

Quote :

"haha, i was switch guy. all i ever knew was speed and duplex on ethernet ports. "

that knowledge can be handy at times

6/28/2010 2:42:45 PM