What does CIDR notation '/24' indicate in relation to subnet masks?

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Multiple Choice

What does CIDR notation '/24' indicate in relation to subnet masks?

Explanation:
CIDR notation shows how many bits at the start of the IP address are used for the network portion. A slash followed by a number is that length. For /24, 24 leading bits are set for the network, so the subnet mask is 11111111.11111111.11111111.00000000, which is 255.255.255.0 in dotted decimal. This means there are 8 bits left for host addresses, giving 256 total addresses in the subnet (typically 254 usable addresses for hosts). The key idea is that the slash number defines the network prefix length, not a fixed mask or the total number of subnets, and the host-address capacity follows from 32 minus the prefix length.

CIDR notation shows how many bits at the start of the IP address are used for the network portion. A slash followed by a number is that length. For /24, 24 leading bits are set for the network, so the subnet mask is 11111111.11111111.11111111.00000000, which is 255.255.255.0 in dotted decimal. This means there are 8 bits left for host addresses, giving 256 total addresses in the subnet (typically 254 usable addresses for hosts). The key idea is that the slash number defines the network prefix length, not a fixed mask or the total number of subnets, and the host-address capacity follows from 32 minus the prefix length.

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