What is the range of numbers for IP addresses in dotted-quad form?

The correct answer is based on the structure of IPv4 addresses, which are expressed in dotted-quad form. Each of the four octets in a dotted-quad IP address represents an 8-bit binary number. Therefore, each value in an octet can range from 0 to 255.

In more detail, the four octets together allow for a combination of values that can be expressed in the form of X.X.X.X, where X can take any integer value between 0 and 255. This range is determined by the fact that 2^8 (the number of possible combinations for an 8-bit binary number) equals 256, which includes the values from 0 to 255. Hence, when discussing the overall range for any single octet, it appropriately lies between 0 and 255, confirming that this choice accurately represents the valid numerical limits for IP addresses in dotted-quad form.

Understanding this concept lays the groundwork for further exploring networking principles and protocols, particularly how devices identify and communicate over IP networks.