Seven Second Subnetting

CIDR

Classless Inter-Domain Routing; a method for allocating IP addresses and routing.

Magic Number

A shortcut method to quickly calculate subnetting without detailed binary calculations.

Subnet Mask

A 32-bit number that divides an IP address into a network and host addresses.

Subnet Address

The address of a subnet that identifies the segment of the network.

Broadcast Address

The IP address used to send data to all hosts in a subnet.

Usable IP Address

Valid IP addresses within a subnet that can be assigned to hosts.

Network Splitting

Dividing a larger network into smaller subnetworks to allocate IP addresses effectively.

Subnetting

The practice of dividing a network into smaller, manageable sub-networks.

Subnet Boundaries

The starting and ending IP addresses of each subnet.

Seven Second Subnetting

A subnetting shortcut method that requires minimal calculations to determine network addresses.