In the IPv4 example 93.184.216.34, which part identifies the network?

In the IPv4 example 93.184.216.34, which part identifies the network?

• A. 93
• B. 34
• C. 184
• D. 216

Answer: (A)

IPv4 addresses are divided into a network portion and a host portion. In traditional classful addressing, the network part is determined by the first octet: Class A uses the first octet as the network. The number 93 falls in the Class A range (1–126), so the network is identified by the first octet, 93. The remaining parts—184, 216, and 34—are used to identify hosts within that 93.x.x.x network. If a different subnet mask were used (CIDR), the exact network portion could change, but under the standard classful assumption, the network is the first octet.

IPv4 addresses are divided into a network portion and a host portion. In traditional classful addressing, the network part is determined by the first octet: Class A uses the first octet as the network. The number 93 falls in the Class A range (1–126), so the network is identified by the first octet, 93. The remaining parts—184, 216, and 34—are used to identify hosts within that 93.x.x.x network. If a different subnet mask were used (CIDR), the exact network portion could change, but under the standard classful assumption, the network is the first octet.