Neco 2024 Computer Studies Question 4
Practice objective / multiple choice question 4 from the 2024 Neco Computer Studies examination.
A company's password policy requires passwords of length\(8\) that contain at least one uppercase letter, one lowercase letter, one digit and one special character (chosen from the set \{!, @, #, $, %, ^, &, *, ?, \}\) of 10 symbols). Characters may be repeated.\n\n(a) Using inclusion-exclusion, determine the total number of possible passwords that satisfy the policy.\n(b) If an attacker can test 10\,000 passwords per second, how many years (to the nearest whole year) would it take to try 10\% of the entire password space? (Assume 1\,year = 365\,days.)
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About This Question
This is Neco 2024 Computer Studies Question 4. It is one of the objective questions from the 2024 Neco Computer Studies examination.
Difficulty level: Medium .
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