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Software Testing (LTAT.05.006)
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Which of the following characterizes “Exploratory Testing” (ET) best?
Assume you have developed a trading system for the national stock exchange and guarantee an availability of 99.999% (five nines) for your system.
Which amount of downtime per year would be within the limit of the guarantee (i.e., not breaking the promise you made with regards to availability)?
The following question is related to a study published here:
Thelin, T.; Runeson, P.; Wohlin, C.: ”Prioritized Use Cases as a Vehicle for Software Inspections”, IEEE Software , vol. 20, no.4, pp. 30-33, July-August 2003
When comparing the effectiveness of Usage-based Reading (UBR) with Checklist-based Reading (CBR), which statement is correct?
What is the biggest problem of an organization that has a separate test group but the group is managed by the same person who is in charge of the development team and responsible for delivering the product on time?
Assume you apply the Mt version of the Capture-Recapture model to the following data collected by two reviewers during the review of a design document:
Total number of defects = 9
Number of defects found by Reviewer 1 = 4
Number of defects found by Reviewer 2 = 7
What would be the estimate of the remaining faults, i.e., the number of faults not yet found by any of the reviewers?
What is the biggest problem in a highly agile organization with regards to testing/quality assurance?
Why is it important to analyze and improve the test process (or: test methodology)?
The following question is related to a study published here:
Thelin, T.; Runeson, P.; Wohlin, C.: ”Prioritized Use Cases as a Vehicle for Software Inspections”, IEEE Software , vol. 20, no.4, pp. 30-33, July-August 2003
When comparing the efficiency of Usage-based Reading (UBR) with Checklist-based Reading (CBR), which statement is correct?
Assume you apply the Mt version of the Capture-Recapture model to the following data collected by two reviewers during the review of a design document:
Defect number 1 2 3 4 5 6 7 8 9
Reviewer 1 x x x x
Reviewer 2 x x x x x x x
An ‘x’ indicates that a reviewer has found the defect with the corresponding number.
What would be the estimate of the remaining faults, i.e., the number of faults not yet found by any of the reviewers?
Assume that ‘reliability’ is calculated using Mean-Time-Between-Failures (MTBF) and MTBF is constant.
What is the probability that a software system is failure-free during the time interval [0, t], where t=MTBF?