City Guilds Model Questions Vol1 2020 Information Technology Question 23
Practice objective / multiple choice question 23 from the 2020 City Guilds Model Questions Vol1 Information Technology examination.
A RAID 5 array consists of 5 disks, each of capacity 2 TB and sequential read speed 200 MB/s. The annual failure probability of each disk is 0.02, independent of the others. What is the probability that the array suffers data loss due to two or more disk failures within a year? Express your answer as a decimal rounded to four significant figures.
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About This Question
This is City Guilds Model Questions Vol1 2020 Information Technology Question 23. It is one of the objective questions from the 2020 City Guilds Model Questions Vol1 Information Technology examination.
Difficulty level: Hard .
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