Software Engineering (10th Edition)
10th Edition
ISBN: 9780133943030
Author: Ian Sommerville
Publisher: PEARSON
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Chapter 11, Problem 11.3E
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Reliability Metrics:
To specify the required reliability for a train protection system, the most appropriate reliability metric is Probability Of Failure On Demand (POFOD).
- It is defined as the probability to which the system will respond correctly when a request is made for service at a given point of time.
- This metric is used for protection systems where demands for service are intermittent and relatively infrequent over the system lifetime...
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Explain the concept of "fault masking" and its implications for software safety.
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Describe the concept of fault tolerance and its significance in software safety engineering.
Chapter 11 Solutions
Software Engineering (10th Edition)
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- Describe the common techniques used for software fault detection and fault tolerance.arrow_forwardExplain the concept of fault tolerance in software design and provide examples of techniques used to achieve it.arrow_forwardExplain the concept of fault tolerance in software safety. What techniques and strategies can be used to design fault-tolerant systems?arrow_forward
- Explain the concept of fault tolerance in system management and provide examples.arrow_forwardTroubleshooter Think of a technical problem you may have encountered. It can be related to software, hardware, or even in a non-technical setting. Why is it important to follow a troubleshooting methodology to solve the problem? When faced with a problem, why do you suppose you shouldn't start trying fixes immediately as they occur?arrow_forwardSubject: Software Engineering You are designing an intrusion detection system (IDS) to prevent theft at a bank occupying a 60-floor downtown Chicago building. IDS interfaces with motion sensors located both inside and outside of the building as its only means of sensing intrusion. IDS must satisfy the following: Ensurethat a police officer arrives at the location of any intrusion quickly; Makeany intruder run away quickly; Ensure that a maintenance worker arrives at the location of any failed sensor quickly. Questions: Specify a minimal set of signals to support the C-C-I and H-C-I of IDS and its partners. Use pseudo-code to show the operation of the system.arrow_forward
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