Which statement about Class C networks is true?

• A. They enable a large number of networks with up to 254 hosts each
• B. They enable only few networks with many hosts
• C. They don't allow hosts
• D. They are private networks

Answer: (A)

Class C networks use a 24-bit network portion with an 8-bit host portion, giving a default subnet mask of 255.255.255.0. That means each network can have up to 256 addresses, of which 2 are reserved (one for the network address and one for the broadcast address), leaving 254 usable host addresses per network. Because there are many possible Class C networks in the IPv4 space, you end up with a large number of distinct networks, each capable of supporting up to 254 hosts. This aligns with the statement that Class C networks enable a large number of networks with up to 254 hosts each.

The idea that they don’t allow hosts is incorrect, since hosts are the devices assigned IPs within each network. The notion that only a few networks exist with many hosts is also not accurate for Class C, which is designed for many small networks rather than a few huge ones. And while private address ranges exist within Class C spaces (for example 192.168.x.x), Class C networks themselves are not inherently private.