On average, __________ of all possible keys must be tried in order to achieve success with a brute-force attack.
A) one-fourth
B) half
C) two-thirds
D) three-fourths

Question

Quizplus · Accepted Answer

On average, half of all possible keys must be tried in a brute-force attack to find the correct key, as the correct key could be found anywhere from the first try to the last within the set of all possible keys.

On Average, __________ of All Possible Keys Must Be Tried