network
C-class
[ 192.168.0.0/24 ]
NNNNNNNN - NNNNNNNN - NNNNNNNN - HHHHHHHH
2개로 분할(2^n = 2, 따라서 n은 1)
NNNNNNNN - NNNNNNNN - NNNNNNNN - NHHHHHHH
1. NNNNNNNN - NNNNNNNN - NNNNNNNN - 0HHHHHHH
[1] Range: NNNNNNNN - NNNNNNNN - NNNNNNNN - 00000000
~ NNNNNNNN - NNNNNNNN - NNNNNNNN - 01111111
192.168.0.0 ~ 192.168.0.127
[2] Network Address : 192.168.0.0
[3] Host Address : 192.168.0.1 ~ 192.168.0.126
[4] Broadcast Address: 192.168.0.127
[5] Subnet Mask : 255.255.255.128
PC-PT PC0 -> 192.168.0.1
PC-PT PC1 -> 192.168.0.2
PC-PT PC2 -> 192.168.0.3
GATEWAY: 192.168.0.126
2. NNNNNNNN - NNNNNNNN - NNNNNNNN - 1HHHHHHH
[1] Range: NNNNNNNN - NNNNNNNN - NNNNNNNN - 10000000
~ NNNNNNNN - NNNNNNNN - NNNNNNNN - 11111111
192.168.0.128 ~ 192.168.0.255
[2] Network Address : 192.168.0.128
[3] Host Address : 192.168.0.129 ~ 192.168.0.254
[4] Broadcast Address: 192.168.0.255
[5] Subnet Mask : 255.255.255.128
PC-PT PC3 -> 192.168.0.129
PC-PT PC4 -> 192.168.0.130
PC-PT PC5 -> 192.168.0.131
GATEWAY: 192.168.0.254
[ping xxx.xxx.xxx.xxx]