The IP Address 192.168.0.1 belongs to _____

• A. Class C
• B. Class A
• C. Class B
• D. Class D

Answer: (A)

Classful IP addressing uses the first octet to determine the network class. The first octet here is 192, which falls in the 192–223 range, defining Class C. Class C addresses have a default subnet mask of 255.255.255.0. It’s also common to see 192.168.0.1 as a private address within the 192.168.0.0/16 range, frequently used in home networks. So this address is classified as Class C. It isn’t in Class A or B because those ranges start with lower numbers, and it isn’t Class D because that range is 224–239 for multicast.