City Guilds Model Questions Vol1 2018 Information Technology Question 28
Practice objective / multiple choice question 28 from the 2018 City Guilds Model Questions Vol1 Information Technology examination.
A system requires an 8‑character password. Each character can be an uppercase letter (26), a lowercase letter (26), a digit (10) or a special symbol (12), giving \(74\) possible symbols per position. An attacker can try \(1000\) passwords per second, but the account locks after \(5\) failed attempts and remains locked for \(30\) minutes before another trial can start. Assuming the attacker cycles continuously with this lock‑out policy, estimate the expected time (in years, to one decimal place) required to discover a random password.
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About This Question
This is City Guilds Model Questions Vol1 2018 Information Technology Question 28. It is one of the objective questions from the 2018 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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