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COS3721 ASSIGNMENT 3 2023
- Exam (elaborations) • 11 pages • 2023
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COS3721 A3 - Good marks guaranteed 
Operating Systems And Architecture (University of South Africa) 
lOMoARcPSD| 
COS3721 
Assignment 3 
2022 
Unique No.: 
Due Date: 19 September 2022 
lOMoARcPSD| 
Preview … 
Question 1 
a) Probability of 1 failure of 1000 hard disk = 750,000/1000 = 750 hrs 
So, 750/24 = 31.25 days 
So answer is approx. one in a month. 
b) 1 million hours is approximately 114 years, but we cannot say that warranty of product is 114 
years, MBTF is a experiment and stat...