Which of the following best illustrates the default subnet mask for a class A,B, and C Network?
A
0.0.0.0, 0.0.0.1, 0.0.1.1
B
255.255.255.0, 255.255.0.0, 255.0.0.0
C
255.0.0.0, 255.255.0.0, 255.255.255.0
D
255.255.0.0, 255.255.255.0, 255.255.255.255
E
None of the above
Correct Answer: 255.0.0.0, 255.255.0.0, 255.255.255.0