PowerCert Animated Videos | Subnet Mask - Explained @PowerCertAnimatedVideos | Uploaded 2 years ago | Updated 10 hours ago
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A subnet mask is a number that resembles an IP address. It reveals how many bits in the IP address are used for the network by masking the network portion of the IP address. This video also does a short lesson on subnetting. Subnetting is breaking down a large network into smaller networks or subnets.