Which of the following is the default Subnet Mask for the IP Address 133.142.7.82?
A)255.0.0.0
B)255.255.0.0
C)255.255.255.0
D)255.255.255.255

Question

Quizplus · Accepted Answer

255.255.0.0 is the default subnet mask for the Class B IP Address 133.142.7.82.
Key Takeaway - An IP address that begins with 133 can be automatically classified as a Class B IPv4 Address; class B IP addresses have the default Subnet Mask 255.255.0.0, which designates the first two octets (133.142) as the Network address, and the last two octets (7.82) as the node address. Class A addresses range from 1-126, Class C from 128-191, and Class D from 192.223.

Which of the Following Is the Default Subnet Mask for the IP