In CIDR notation, what does /24 represent?

In CIDR notation, what does /24 represent?

Step 1: Understand that CIDR stands for Classless Inter-Domain Routing, which is a way to represent IP addresses and their associated network masks.
Step 2: Recognize that the notation /24 means that the first 24 bits of the subnet mask are set to 1.
Step 3: Know that a subnet mask is a 32-bit number that divides the IP address into the network and host parts.
Step 4: Convert the /24 notation into binary: the first 24 bits are 1s (11111111.11111111.11111111.00000000).
Step 5: Convert the binary subnet mask into decimal: 11111111 in binary is 255, so the subnet mask is 255.255.255.0.
Step 6: Conclude that /24 indicates a subnet mask of 255.255.255.0.

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