单选题In a brute-force attack， what percentage of the keyspace must an attacker generally search through until heor she finds the key that decrypts the data？（）ARoughly 50 percentBRoughly 66 percent ActualTests.comCRoughly 75 percentDRoughly 10 percent
单选题
In a brute-force attack， what percentage of the keyspace must an attacker generally search through until heor she finds the key that decrypts the data？（）
A
Roughly 50 percent
B
Roughly 66 percent ActualTests.com
C
Roughly 75 percent
D
Roughly 10 percent
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