单选题Which of the following is an invalid IPv4 address?（）A225.0.0.1B254.254.0.0C256.0.0.4D224.2.1.4
单选题
Which of the following is an invalid IPv4 address?（）
A
225.0.0.1
B
254.254.0.0
C
256.0.0.4
D
224.2.1.4
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