Curso de Preparación para el Examen de CCNA 200-120 | Page 42
IP Address Classes
Class A
1 – 127
(Network 127 is reserved for loopback and internal testing)
00000000.00000000.00000000.00000000
Leading bit pattern
0
Network .
Host
.
Host
.
Host
Class B
128 – 191
Leading bit pattern
10
10000000.00000000.00000000.00000000
Class C
192 – 223
Leading bit pattern
110
11000000.00000000.00000000.00000000
Class D
224 – 239
(Reserved for multicast)
Class E
240 – 255
(Reserved for experimental, used for research)
Network .
Network .
Network .
Network
Host
. Network
.
.
Host
Host
Private Address Space
Class A
10.0.0.0 to 10.255.255.255
Class B
172.16.0.0 to 172.31.255.255
Class C
192.168.0.0 to 192.168.255.255
Default Subnet Masks
Class A
255.0.0.0
Class B
255.255.0.0
Class C
255.255.255.0
This workbook assumes you already have a background in subnetting. If you don’t you may
want to consider completing the IP Addressing and Subnetting Workbook.
Produced by: Robb Jones
[email protected]
Frederick County Career & Technology Center
Cisco Networking Academy
Frederick County Public Schools
Frederick, Maryland, USA
Special Thanks to Melvin Baker and Jim Dorsch
for taking the time to check this workbook for errors.
Inside Cover