Neco 2023 Data Processing Question 29
Practice objective / multiple choice question 29 from the 2023 Neco Data Processing examination.
An organization uses two independent security controls for user login: a password that can be guessed in a brute‑force attack with probability \(0.0004\), and a one‑time token (second factor) that can be compromised with probability \(0.001\). Assuming the attacker must defeat both controls to gain access, compute the overall probability of a successful breach. If the organization upgrades the second factor to a biometric scanner, reducing its compromise probability to \(0.0002\) (password probability unchanged), what is the new overall breach probability? Express both probabilities in scientific notation to three significant figures.
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About This Question
This is Neco 2023 Data Processing Question 29. It is one of the objective questions from the 2023 Neco Data Processing examination.
Difficulty level: Hard .
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