28 Apr Practice Test Question – Key Length
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As you increase the length of a key by a single bit, how much more resilient does that key become against a brute force attack?
A. Four times stronger
B. Ten times stronger
C. One percent stronger
D. Twice as strong
Correct Answer: D
Adding a single bit to a cryptographic key doubles the number of possible keys, making the new key length twice as strong as the previous key length.