Comptia A+ Practical Application

30. The IP address 192.168.1.1 should have what default subnet mask?
 A. 255.255.0.0
 B. 255.255.255.0
 C. 255.0.0.0
 D. 255.255.255.255

30.B. 192.168.1.1 is a private Class C address and therefore should have the subnet mask 255.255.255.0, the standard default subnet mask for Class C. (See the following table) See the section titled “Networking Fundamentals” in Chapter 14, “Networking,” for more information.