Which of the following IP addresses fall into the CIDR block of 115.54.4.0/22? Select three

A. 115.54.8.32
B. 115.54.7.64
C. 115.54.6.255
D. 115.54.3.32
E. 115.54.5.128
F. 115.54.12.128

Answer: B, C, E

Explanation:
Given CIDR block of 115.54.4.0 /22:
subnet mask : 255.255.252.0
theIP address range would be 115.54.4.1 to 115.54.7.254.
Therefore, 115.54.5.128 (E),115.54.6.255 (C) and 115.54.7.64 (B) are correct.