Subnet Masks

• Used to make it easier to separate the subnet part of the address from the host part.

• Example

  • Subnet: 149.61.10.x
  • Subnet mask: 255.255.255.000 or in binary
    11111111.11111111.11111111.00000000

• Example

  • Subnets: 149.61.10.1-128,
  • Subnet mask 255.255.255.128 or, in binary:

11111111.11111111.11111111.10000000

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