Multiple Choice
One of the below IP address / subnet mask pairs is invalid;find the invalid answer.
A) 10.0.239.254 / 255.0.255.0
B) 172.31.1.200 / 255.255.0.0
C) 192.168.2.190 / 255.255.255.128
D) 10.200.139.1 / 255.255.255.248
Correct Answer:

Verified
Correct Answer:
Verified
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