What is the default subnet mask for a Class C IPv4 address?

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Multiple Choice

What is the default subnet mask for a Class C IPv4 address?

Explanation:
In IPv4, classful addressing assigns a fixed default subnet mask based on the address class. A Class C address uses 24 bits for the network and 8 bits for hosts, so the default mask is 255.255.255.0 (a /24). This means the first three octets identify the network, and the last octet identifies hosts within that network. There are 256 addresses in a Class C network, of which 254 are usable for devices. The other masks correspond to other classes (Class A uses 255.0.0.0, Class B uses 255.255.0.0), and 255.255.255.255 is the broadcast address, not a subnet mask.

In IPv4, classful addressing assigns a fixed default subnet mask based on the address class. A Class C address uses 24 bits for the network and 8 bits for hosts, so the default mask is 255.255.255.0 (a /24). This means the first three octets identify the network, and the last octet identifies hosts within that network. There are 256 addresses in a Class C network, of which 254 are usable for devices. The other masks correspond to other classes (Class A uses 255.0.0.0, Class B uses 255.255.0.0), and 255.255.255.255 is the broadcast address, not a subnet mask.

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