Neco 2025 Data Processing Question 14
Practice objective / multiple choice question 14 from the 2025 Neco Data Processing examination.
An organisation enforces a password policy: each password must be exactly 8 characters long. The allowed characters are uppercase letters (26), lowercase letters (26), digits (10) and symbols (12). A valid password must contain **at least one** character from each of the four categories.\n(a) Using the principle of inclusion-exclusion, calculate the total number of distinct valid passwords.\n(b) If an attacker can test \(10^{9}\) passwords per second, estimate the minimum time required to exhaust the entire password space, expressing the answer in **days**, rounded up to the nearest whole day.
Answer Options
About This Question
This is Neco 2025 Data Processing Question 14. It is one of the objective questions from the 2025 Neco Data Processing examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.