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Questions

IP Address Ranges

For any of the Networking exams we need to know address range classes, with the associated default subnet mask.

Address ranges

• Class A address 1 - 126
• Class B address 128 - 191
• Class C address 192 - 223

NAT (National address translation) Address range

• Class A address 10.0.0.0 - 10.255.255.255
• Class B address 172.16.0.0 - 172.31.255.255
• Class C address 192.168.0.0 - 192.168.255.255

APIPA (Automatic IP Addressing)

• Class B address 169.254.0.0 - 169.254.255.255

Default Subnet mask

• Class A address 255.0.0.0   Network.Host.Host.Host
• Class B address 255.255.0.0    Network.Network.Host.Host
• Class C address 255.255.255.0    Network.Network.Network.Host

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