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Subnets and Powers
Subnets and Powers for Cisco
26
Communication
Undergraduate 4
02/14/2011
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Term

/24 

subnetm, block size, networks?

 Definition

 

255.255.255.0

255 block size

1 network

 

 
Term

 

/25

subnetm, block size, networks?

 

 Definition

 

255.255.255.128

128 block size

2 network

 
Term

 

/26 

subnetm, block size, networks?

 

 Definition

255.255.255.192

64 block size

4 networks
Term

/27

subnet, blocksize, networks?

 Definition

 

255.255.255.224

32 block size

8 network

 
Term

/28

subnet, block size, networks?

 Definition

255.255.255.240

16 block size

16 networks
Term

/29

subnet, block size, networks?

 Definition

255.255.255.248

8 block size

32 networks
Term

/30

subnet, block size, networks?

 Definition

255.255.255.252

4 block size

64 networks
Term
Class A range
 Definition
0-127
Term
Class B Range
 Definition
128-191
Term
Class C Range
 Definition
192-223
Term
/9 mask
 Definition
255.128.0.0
Term
/10 mask
 Definition
255.192.0.0
Term
/11 mask
 Definition
255.224.0.0
Term
/12 mask
 Definition
255.240.0.0
Term
/13 mask
 Definition
255.248.0.0
Term
/14 mask
 Definition
255.252.0.0
Term
/15 mask
 Definition
255.253.0.0
Term
/16 mask
 Definition
255.255.0.0
Term
/17 mask
 Definition
255.255.128.0
Term
/18 mask
 Definition
255.255.192.0
Term
/19 mask
 Definition
255.255.224.0
Term
/20 mask
 Definition
255.255.240.0
Term
/21 mask
 Definition
255.255.248.0
Term
/22 mask
 Definition
255.255.252.0
Term
/23 mask
 Definition
255.255.253.0
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