Neco 2018 Data Processing Question 15
Practice objective / multiple choice question 15 from the 2018 Neco Data Processing examination.
A company employs three independent security controls against cyber‑attacks:\n\n- Firewall blocks an attack with probability \(0.90\);\n- Intrusion Detection System (IDS) detects an attack with probability \(0.80\);\n- Employee training prevents a successful phishing attempt with probability \(0.70\).\n\nAssuming an attack must bypass all three controls to succeed and that the controls operate independently,\n\na) What is the probability that a single attack succeeds?\n\nb) If the company experiences \(500\) attack attempts in a year, what is the expected number of successful attacks (rounded to the nearest whole number)?
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About This Question
This is Neco 2018 Data Processing Question 15. It is one of the objective questions from the 2018 Neco Data Processing examination.
Difficulty level: Hard .
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