In a Class B network, the default subnet mask is 255.255.0.0, which allocates:
16 bits for the network portion
16 bits for the host portion
When the subnet mask is changed to255.255.255.0, it becomes:
24 bits for the network portion
8 bits for the host portion
This indicates that8 bitshave been borrowed from the host portion to create additional subnets. Borrowing bits allows for the division of the original network into smaller sub-networks, enhancing organization and security within the network.
[Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco IOS Software Basics, , ]
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