City Guilds Model Questions Vol1 2023 Information Technology Question 29
Practice objective / multiple choice question 29 from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
A data centre operates four identical servers. In any given month, each server fails independently with probability 0.02. Performing preventive maintenance on a server reduces its failure probability for that month by 30 % (i.e., to 0.014). Due to limited resources, at most two servers can receive maintenance in a month. Over a 12‑month period the team can schedule maintenance any way they choose, but the total number of maintenance slots is therefore 24. Determine the minimum expected total number of server failures during the year and state how many times each server should be scheduled for maintenance to achieve this minimum.
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About This Question
This is City Guilds Model Questions Vol1 2023 Information Technology Question 29. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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