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ISTQB Certified Tester Advanced Level Technical Test Analyst Sample Questions (Q120-Q125):

NEW QUESTION # 120
Consider the pseudo code for the Answer program:

Which of the following statements about the Answer program BEST describes the control flow anomalies to be found in the program?

A. The Answer program contains an infinite loop.
B. The Answer program contains unreachable code and an infinite loop.
C. The Answer program contains unreachable code.
D. The Answer program contains no control flow anomalies.

Answer: B

Explanation:
The provided pseudo code for the Answer program shows a WHILE loop that will always execute because the condition for the loop to terminate (a >= d) is never met within the loop's body. This results in an infinite loop.
Additionally, since the value of 'b' is initialized with 'a + 10' and 'a' starts from a value that is read and then set to 2, 'b' will never be equal to 12. Therefore, the 'THEN' branch of the IF statement, which includes 'print(b)', is unreachable. These are control flow anomalies because they represent logic in the code that will not function as presumably intended.

NEW QUESTION # 121
Consider the following control flow graph:

The control flow represents a software component of a car navigation system. Within the project the maximum cyclomatic complexity to be allowed is set at 5.
Which of the following statements is correct?

A. No defect needs to be reported since the cyclomatic complexity of the component is calculated at 3.
B. A defect needs to be reported since the cyclomatic complexity of the component is calculated at 6.
C. No defect needs to be reported since the cyclomatic complexity of the component is calculated at 5.
D. No defect needs to be reported since the cyclomatic complexity of the component is calculated at 4

Answer: B

Explanation:
Cyclomatic complexity is a measure of the number of linearly-independent paths through a program's source code, which is often used as a measure of the complexity of a program. The control flow graph provided represents the logic of a software component and has more than 5 nodes with decision points, indicating that the complexity would exceed the maximum allowed value of 5. The calculation for cyclomatic complexity is V(G) = E - N + 2P, where E is the number of edges, N is the number of nodes, and P is the number of connected components. In this case, the calculated cyclomatic complexity exceeds the allowed threshold, thus a defect should be reported.

NEW QUESTION # 122
What is the common name for a type of automated testing technique that separates test input data and expected test results from the control script used to execute all of the tests?

A. Model-driven testing
B. Data-based testing
C. Keyword-driven testing
D. Behavior-based testing

Answer: C

Explanation:
The common name for the automated testing technique that separates test input data and expected results from the control script is Keyword-driven testing. In this approach, test scripts are written using keywords related to the application under test, which are easy to read and can be interpreted by a script engine to perform testing actions.
* Explanation: This methodology allows for the reusability of scripts and easier maintenance because the test data and the scripts that use the data are maintained separately.

NEW QUESTION # 123
Consider the following statements regarding Performance Efficiency Testing:
A) Static Analysis tools can analyze code to identify performance bottlenecks
B) Code reviews are an effective way of detecting performance issues
C) Scalability and Load testing are usually performed during the System test level
D) Performance test execution cannot begin until a production-like environment is available Which TWO of these statements are TRUE?

A. a and b
B. c and d
C. b and c
D. a and c

Answer: D

Explanation:
Statements about Performance Efficiency Testing:
A: Static Analysis tools can analyze code to identify performance bottlenecks.
* True. Static analysis tools can examine the codebase to identify potential performance issues, such as
* inefficient algorithms or resource-intensive operations.
B: Code reviews are an effective way of detecting performance issues.
* True. Code reviews can help identify inefficient code and potential performance bottlenecks, especially when reviewers have experience in performance optimization.
C: Scalability and Load testing are usually performed during the System test level.
* True. These tests are typically conducted during the system testing phase to ensure that the application can handle expected load levels and scale appropriately.
D: Performance test execution cannot begin until a production-like environment is available.
* False. While a production-like environment is ideal for accurate performance testing, preliminary performance tests can begin in a less similar environment, with full testing deferred until a closer approximation of production is available.
References:
The ISTQB CTAL-TTA syllabus and standard testing practices provide information on performance testing, including the use of static analysis tools and the typical timing of scalability and load testing.
Sources:
* ISTQB-CTAL-TTA Syllabus
* General knowledge on performance testing practices.

NEW QUESTION # 124
BestFor Incorporated is a rapidly growing online financial services company that offers guidance to its customers on a range of financial products. Its first website, BestForMortgages, was launched two years ago, shortly followed by BestForPensions. The popularity of both sites has driven the company to expand its offerings into other sectors and a third website, BestForFood, is currently under development.
The first two websites have proven to be functionally robust but suffered from performance issues due to:
Underestimation of concurrent user access at peak times in its original operational profiles Data volumes rapidly growing beyond expectations on a single database shared by both sites.
All three websites will share the same web server.
In consideration of the problems encountered with the first two websites, which TWO of the following types of testing should be performed on the BestForFood website to see whether similar defects exist?
A) Load Testing
B) Stress Testing
C) Scalability testing
D) Portability Testing
E) Recoverability testing

A. d and e
B. b and c
C. a and c
D. b and d

Answer: C

Explanation:
Analysis:
Given the problems encountered with the first two websites, the types of testing needed for the BestForFood website should address similar issues related to performance under peak load and data volume growth.
* Load Testing:
* Load testing helps identify the behavior of the website under expected user load conditions. It simulates multiple users accessing the website simultaneously to ensure it can handle peak traffic without performance degradation. This is essential given the underestimation of concurrent user access for the first two websites.
* Scalability Testing:
* Scalability testing evaluates how well the system can handle increased loads by scaling up its resources, such as adding more servers or increasing database capacity. This is crucial for ensuring that the website can manage rapid data volume growth and increased user traffic over time.
Explanation of Incorrect Options:
* B. Stress Testing:
* Stress testing pushes the system beyond its normal operational capacity to identify breaking points. While important, it is more extreme than necessary for addressing the issues of underestimated user access and data volume growth.
* D. Portability Testing:
* Portability testing assesses how well the software can be moved from one environment to another, which is not directly related to the performance issues described.
* E. Recoverability Testing:
* Recoverability testing ensures the system can recover from failures, which is not the primary concern here.
References:
The ISTQB CTAL-TTA syllabus covers different types of non-functional testing and their relevance. Load and scalability testing are emphasized for addressing performance and capacity-related risks.
Sources:
* ISTQB-CTAL-TTA Syllabus
* General knowledge on non-functional testing practices.

NEW QUESTION # 125
......

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