A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?

The correct answer is A. 1.157 ?10 -4. You've hit your weekly limit · resets 5am (America/New_York)

Maintainability and Availability

Question

Options

A1.157 ?10 -4
B3.472 ?10 -4
C0.0333
D0.999

How the community answered

(41 responses)

A
78% (32)
B
15% (6)
C
5% (2)
D
2% (1)

Explanation

You've hit your weekly limit · resets 5am (America/New_York)

Topics

#system unavailability#maintenance downtime#availability calculation#scheduled maintenance

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