Question 4 a) Describe the relevant modelling components of the 'Bow Tie' model used when evaluating operational risk. [

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Question 4 A Describe The Relevant Modelling Components Of The Bow Tie Model Used When Evaluating Operational Risk 1 (53.95 KiB) Viewed 46 times

Question 4 a) Describe the relevant modelling components of the 'Bow Tie' model used when evaluating operational risk. [6 marks) b) Consider the following scenario: "The power supply for a data centre is provided by three identical generators, organised in parallel such that should one generator fail the second and third generators will be able to successfully supply power to keep the data centre functioning. If two or more generators fail the data centre power supply will fail." i) Draw a Bayesian Network diagram for the fault tree showing how the power supply for the data centre is influenced by the generators, define all relevant states, and specify the type of relationship that governs the probability of power failure for the data centre. 16 marks) ii) Each generator has a probability of failure of 0.024. What is the failure probability for the power supply of the data centre? [13 marks IQuestion 4 TOTAL: 25 marks] End of Paper 7