SQA Chapter
SQA - Black Box Testing
https://docs.google.com/document/d/15vHLfvMgSzk7RttiJ8p18e697iKLfcWRsZv4RK-bNSA/edit#heading=h.8p2dpl4jt1qz
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SQA - Black Box Testing
Questions 1 of 20
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SQA - Black Box Testing
Test Techniques help develop a relatively small, but sufficient set of test cases in a systematic way
Questions 2 of 20
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SQA - Black Box Testing
This technique is also know as specification-based technique
Questions 3 of 20
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SQA - Black Box Testing
Black Box Test Techniques are based on an analysis of the test object’s internal structure and processing.
Questions 4 of 20
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SQA - Black Box Testing
It is based on the principle that data (both input and output) can be divided into groups that are expected to be treated similarly
Questions 5 of 20
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SQA - Black Box Testing
Equivalence Partitions can be defined for valid data (accepted by the system) and invalid data (rejected by the system)
Questions 6 of 20
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SQA - Black Box Testing
In an Examination, a candidate has to score a minimum of 24 marks in order to clear the exam. The maximum that he can score is 40 marks. Identify Valid Equivalence values if the student clears the exam.
Questions 7 of 20
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SQA - Black Box Testing
In a system designed to work out the taxes to be paid: An employee has £4000 of salary tax-free. The next £1500 is taxed at 10%. The next £28000 after that is taxed at 22%. Any further amount is taxed at 40%. To the nearest whole pound, which of these groups of numbers fall into three DIFFERENT equivalence classes?
Questions 8 of 20
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SQA - Black Box Testing
It is based on the principle that the developers make mistakes when they want systems to distinguish between equivalence partitions - at the boundaries
Questions 9 of 20
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SQA - Black Box Testing
You are testing an e-commerce system that sells cooking supplies such as spices, flour, and other items in bulk. The units in which the items are sold are either grams (for spices and other expensive items) or kilograms (for flour and other inexpensive items). Regardless of the units, the smallest valid order amount is 0.5 units (e.g., half a gram of cardamom pods) and the largest valid order amount is 25.0 units (e.g., 25 kilograms of sugar). The precision of the unit’s field is 0.1 units. Which of the following is a set of input values that cover the boundary values with two-point boundary values for this field?
Questions 10 of 20
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SQA - Black Box Testing
BVA is applicable for any level/type of testing as long as partitions can be identified as ordered sets
Questions 11 of 20
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SQA - Black Box Testing
The strength of state transition testing is that it provides a systematic approach to identify all the combinations of conditions, some of which might otherwise be overlooked.
Questions 12 of 20
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SQA - Black Box Testing
It is used for testing the implementation of system requirements that specify how different combinations of conditions result in different outcomes. It is an effective way of recording complex logic, such as business rules.
Questions 13 of 20
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SQA - Black Box Testing
Decision tables capture requirements and business rules that contain combination of logical conditions
Questions 14 of 20
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SQA - Black Box Testing
Decision table testing is being performed on a speeding fine system. Two test cases have already been generated for rules R1 and R4, which are shown below: Which two of the additional test cases would achieve full coverage of the complete decision table (when combined with the test cases that have already been generated for rules R1 and R4)? (see doc file for illustration)
Questions 15 of 20
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SQA - Black Box Testing
Consider the following decision table for the portion of an online airline reservation system that allows frequent flyers to redeem points for reward travel. Suppose that there are two equivalence partitions for the condition where “Account/password okay” is not true, one where the account is invalid and another where the account is valid, but the password is invalid. Suppose that there is only one equivalence partition corresponding to the condition where “Account/password okay” is true, where both the account and password are valid. If you want to design tests to cover the equivalence partitions for “Account/password okay” and also for this portion of the decision table, what is the minimum number of tests required? (see doc file)
Questions 16 of 20
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SQA - Black Box Testing
A state transition diagram models the behavior of a system by showing its possible states and valid state transitions. A transition is initiated by an event, which may be additionally qualified by a guard condition.
Questions 17 of 20
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SQA - Black Box Testing
All states coverage is weaker than valid transitions coverage, because it can typically be achieved without exercising all the transitions.
Questions 18 of 20
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SQA - Black Box Testing
In valid transitions coverage (also called 0-switch coverage), the coverage items are single valid transitions. To achieve 100% valid transitions coverage, test cases must exercise all the valid transitions.
Questions 19 of 20
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SQA - Black Box Testing
Consider the following state transition diagram for a credit-card only, unattended gasoline pump: Assume that you want to develop the minimum number of tests to cover each transition in the state transition diagram. Assume further that each test must start at the beginning state, waiting for customer, and each test ends when a transition arrives at the beginning state. How many tests do you need? (see doc file)
Questions 20 of 20
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SQA - Black Box Testing