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What is a subnet mask, and why is it important? answer in 2-3 sentences
A subnet mask is a numerical label used in IP networking to divide an IP address into the network and host portions. It determines which part of the address identifies the network and which part identifies devices within that network. Subnet masks are essential for efficient IP address allocation, enabling network segmentation, and ensuring secure and manageable communication.
VeePN Research Lab 
A subnet mask is a numerical label used in IP networking to divide an IP address into the network and host portions. It determines which part of the address identifies the network and which part identifies devices within that network. Subnet masks are essential for efficient IP address allocation, enabling network segmentation, and ensuring secure and manageable communication.
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