medium
Single Answer
What is the CIDR notation for a subnet mask of 255.255.240.0?
Answer Options
A
/19
B
/20
C
/22
D
/28
Correct Answer: B
Explanation
The CIDR notation for 255.255.240.0 is /20. The first two octets (255.255) represent 16 bits, and 240 in binary is 11110000, which is 4 more bits (16 + 4 = 20). All of the other options are incorrect.
cidr
subnetting
ip-addressing