Give an example problem with solution demonstrating subnet masking and subnet masks.
Understand the Problem
The user is requesting an example subnet masking problem, accompanied by a solution. The aim is to understand how subnet masks work and how they are applied to network addressing.
Answer
To create 4 subnets from 192.168.1.0/24, use the subnet mask /26 or 255.255.255.192.
A company has the IP address block 192.168.1.0/24 and needs to create 4 subnets. What subnet mask should they use? To create 4 subnets, you need 2 bits (2^2 = 4). Borrowing 2 bits from the host portion of the address, the new subnet mask will be /26, or 255.255.255.192.
Answer for screen readers
A company has the IP address block 192.168.1.0/24 and needs to create 4 subnets. What subnet mask should they use? To create 4 subnets, you need 2 bits (2^2 = 4). Borrowing 2 bits from the host portion of the address, the new subnet mask will be /26, or 255.255.255.192.
More Information
Subnetting is used to divide a network into smaller, more manageable networks.
Tips
A common mistake is miscalculating the number of bits needed for the required subnets or hosts. Remember to account for the network and broadcast addresses, which reduce the number of usable host addresses in each subnet.
Sources
- IPv4 Subnetting Practice - subnetipv4.com
- 4 Examples | IP Subnetting Overview - IPCisco - ipcisco.com
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