Which of the following is an example of an IPv4 address?
A. 192:168:1:55 B. 192.168.1.254 C. 00:AB:FA:B1:07:34 D. ::1
Correct Answer: B
Explanation: An IPv4 address is notated as four decimal numbers each between 0 and 255 separated by dots (xxx.xxx.xxx.xxx). Each number is known as an octet as it represents eight binary bits. All four octets make up a 32-bit binary IPv4 address. In this question, 192.168.1.254 is a valid IPv4 address.