What is the network address for an IP address of 10.10.10.20 with a mask of /24?

The network address for an IP address is determined by applying the subnet mask to the IP address. In this case, the IP address is 10.10.10.20, and the subnet mask is /24, which corresponds to 255.255.255.0 in dotted-decimal notation.

With a /24 subnet mask, the first 24 bits of the IP address are used for the network portion, while the last 8 bits are reserved for host addresses within that network. In binary terms, a /24 subnet mask covers the first three octets (10.10.10), with the last octet (the 20 in this case) representing host addresses.

To find the network address, we set all bits of the host part to zero. In this context, that means the last octet becomes 0. Therefore, the network address is 10.10.10.0, which signifies the network to which the IP address 10.10.10.20 belongs.

This understanding is crucial for network design and management, especially for routing and determining available host addresses within a given network segment. The other options, like 10.10.10.255 (which represents a broadcast address), 10.