COS3721 Operating Systems and Architecture

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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...

COS3721 EXAM PACK 2021 COS3721 EXAM PACK 2021

Chapter 1 Some early computers protected the operating system by placing it in a memory partition that could not be modified by either the user job or the operating system itself. Describe two difficulties that you think could arise with such a scheme. a) If the operating system cannot modify the memory, then some important and critical data such as protection and/or security data (e.g. passwords and access control information) necessary for the operating system would have to be passed thr...

This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Basics”. 1. What is operating system? a) collection of programs that manages hardware resources b) system service provider to the application programs c) link to interface the hardware and application programs d) all of the mentioned Answer: d 2. To access the services of operating system, the interface is provided by the ___________ a) System calls b) API c) Library d) Assembly instructions Answe...

Multiple Choice 1. In what way is an operating system like a government? A) It seldom functions correctly. B) It creates an environment within which other programs can do useful work. C) It performs most useful functions by itself. D) It is always concerned primarily with the individual's needs. Ans: B 2. ____ operating systems are designed primarily to maximize resource utilization. A) PC B) Handheld computer C) Mainframe D) Network Ans: C 3. The most common secondary storage device...

Operating System Questions & Answers This set of Operating System Multiple Choice Questions & Answers (MCQs) focuses on “Basics”. 1. What is operating system? a) collection of programs that manages hardware resources b) system service provider to the application programs c) link to interface the hardware and application programs d) all of the mentioned Answer: d 2. To access the services of operating system, the interface is provided by the ___________ a) System calls b) API c) Li...

Chapter 1 Some early computers protected the operating system by placing it in a memory partition that could not be modified by either the user job or the operating system itself. Describe two difficulties that you think could arise with such a scheme. a) If the operating system cannot modify the memory, then some important and critical data such as protection and/or security data (e.g. passwords and access control information) necessary for the operating system would have to be passed thr...