Brief introduction of Network address

Class An address

Property: N.H.H.H

N: for network bit H: host bit

Binary representation: 0000 0001-0111 1111

Decimal representation: 1-127

Mask: 255.0.0.0

The masks of 11111111.00000000.00000000.00000000.00000000 corresponding network addresses are all 1, and the corresponding host locations are all 0.

Number of networks: 126

Each network host bit:

All 1 is: broadcast all 0 is: network address

Each network can accommodate 2 ^ 24-2 hosts

127.0.0.0Comp8 is a loop.

Private address: 10.0.0.0amp 8

Number of networks is 1

Number of hosts: 2 ^ 24-2

Class B address

Property: N.N.H.H

Binary representation: 10 00 0000-10 11 1111

Decimal representation: 128-191

Default mask: 255.255.255.0

Number of networks: 2 ^ 14

Host bits in each network: all 1: broadcast all 0: network address

Each network can accommodate 2 ^ 16-2 hosts

Private address: 172.16.0.0Universe 16-172.31.0.0Universe 16

Number of networks is 16

Number of hosts per network: 2 ^ 16-2

Class C address:

Property: N.N.N.H

Binary: 1100 0000-110 1 1111

Decimal system: 192-223

Default mask: 255.255.255.0

Number of networks: 2 ^ 21

Host bits in each network: all 1: broadcast all 0: network address

Hosts in each network: 2 ^ 8-2