Lynda - Learning Subnetting Link

: Calculating the bits required to support a target number of devices per subnet.

To ensure you can "see" subnets without a calculator, the course includes specific hands-on resources. Lynda - Learning Subnetting

: Determining how many bits to borrow to create a specific number of subnets. : Calculating the bits required to support a

: Identifying the network address, broadcast address, and usable IP range for any given mask. Lynda - Learning Subnetting