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Thats the hard partOriginally posted by Zlash
Subnets are pretty easy once you learn to do it in your head.
Originally posted by Icewindius
I reread the subnet chapter last night and it just isn't sinking in. And the OSI layer is killing me, I swear I have some kinda mental block for anything networking wise.
I don't think im cut out for networking, probably move to MCSA after Network + is done....
It means 24 1's in a row:Originally posted by nerdcore
Like the title says...what does the 24 mean in 10.0.0.0/24. Saw this in a proposed network layout and was wondering. Thanks!
11111111111111111111111100000000
Or, spaced out for readability:
1111 1111 1111 1111 1111 1111 0000 0000
1111 (binary) = F (Hex), so we get:
F F F F F F 0 0
FF.FF.FF.00 -> 255.255.255.0
subnetting is all math
/22 is the following subnet number (netmask):
11111111 11111111 11111100 00000000 (Netmask)
1) 10.3.4.0 in binary:
00001010 00000011 00000100 00000000 (Network #)
2) 10.3.6.14 in binary:
00001010 00000011 00000110 00001110 (target IP)
3) Apply netmask:
00001010 00000011 00000110 00001110 (target IP)
11111111 11111111 11111100 00000000 (Netmask)
--------------------------------------------------------------------------
00001010 00000011 00000100 00000000 (Target Net #)
4) Compare Target Net # with your Network #:
00001010 00000011 00000100 00000000 (Target Net #)
00001010 00000011 00000100 00000000 (Network #)
They are the same, so the target computer is on the same network as your computer.
Zlash - how long did it take to get all those certs?
Subnet masks are easy: convert the netmask and the IP address into binary. It only makes sense in binary -- you're using a bitmask.
Originally posted by Lime
Hex is annoying, but easy. the OSI model is rather easy as well, I mean just make a little thing that helps you remember the 7 layers.
Application
Presentation
Session
Transport
Network
Data Link
Physical
Please Do Not Throw Sausage Pizza Away
=)
Originally posted by Lime
Hex is annoying, but easy. the OSI model is rather easy as well, I mean just make a little thing that helps you remember the 7 layers.
Application
Presentation
Session
Transport
Network
Data Link
Physical
Please Do Not Throw Sausage Pizza Away
=)
Originally posted by BobSutan
I was taught it as
All People Seem To Need Data Processing
I use: All People Seem To Need Data Processing. And its in order.
Originally posted by BobSutan
I was taught it as
All People Seem To Need Data Processing
Originally posted by enforcer17
HAHA cool, exactly what i said on the first page:
Good teaching i guess!!
Nerdcore are you currently studying Net+/ccna? If so dont worry too much if you have read a chapter and dont understand much of it (at first), networking is a very vast field. And it takes time to understand all the concepts. As you study more stuff, what you didnt quite understand previously will come clear to you
Originally posted by Icewindius
That probably applies to me too. There just so much to this field I just cant retain it all. Shit, i've already forgotten the COM IRQ settings and stuff.
Basically im like this, If I dont use it on a day to day basis, I WILL forget it. Other peeps pretty much I assume just remember everything.
Yeah, binary is the key.Originally posted by Icewindius
Oooooooohh OK, now it makes more sense.
I need to stop thinking of the 4 octets and go back to binary and it makes much more sense. Still gotta figure out how many hosts I get per subnet and how many I loose...
I'll never pass CCNA
A /23 would have 32 - 23 = 9 0's. 2^9 = 512 hosts
A /25 would have 32 - 25 = 7 0's. 2^7 = 128 hosts.
OK, I'll almost buy that. It should be 511 and 127 -- you subtract 1, for the broadcast address (the all 1's node). The router is a host on the network. If you have one router, then you can fit 510 or 126 other hosts on the given subnet.Originally posted by Zlash
Nope, 510 and 126. Don't forget to subtract 2. 2^n-2