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ISTQB Certified Tester Advanced Level Technical Test Analyst Sample Questions (Q125-Q130):

NEW QUESTION # 125
You work for a small supermarket chain which has successfully operated a product inventory application for several years. It has recently purchased a data warehousing solution which provides tailorable profiling of product purchases with the aim of improving its marketing strategy. The decision has been made to host the data warehousing software and database on the same server used by the product inventory application. Based on this decision, two product risks have been cataloged:
The co-existence of both applications on the same server may introduce resource conflicts, resulting in an unacceptable impact on the functionality of the product inventory application In the event of loss or corruption of product inventory data during transfer to the warehouse, it may not be possible to restore from back-up in the timeframe required, resulting in lost business.
Which TWO non-functional test types should be included in the test plan to mitigate both product risks?

A. Maintainability testing and Load testing
B. Reliability testing and Stress testing
C. Compatibility testing and Reliability testing
D. Load testing and Portability testing

Answer: B

Explanation:
In this scenario, the small supermarket chain faces two primary risks due to hosting both the data warehousing software and the product inventory application on the same server:
* Resource Conflicts: Co-existence of both applications on the same server may introduce resource conflicts, potentially impacting the functionality of the product inventory application.
* Data Loss/Corruption: In the event of loss or corruption of product inventory data during transfer to the warehouse, it may not be possible to restore from backup in the required timeframe, resulting in lost business.
Appropriate Non-Functional Test Types:
* Reliability Testing (Option C):
* Reliability testing ensures that the system performs consistently and accurately over time, even under load. This will help in identifying potential issues related to data loss or corruption and ensure that backup and restore processes work as expected within the required timeframe.
* Stress Testing (Option C):
* Stress testing evaluates the system's behavior under extreme conditions, such as peak loads. This will help in identifying resource conflicts and the system's ability to handle concurrent operations of both the data warehousing software and the product inventory application without performance degradation.
Explanation of Incorrect Options:
* A. Compatibility Testing and Reliability Testing:
* Compatibility testing is not directly relevant to the identified risks. Reliability testing is correct, but it needs to be paired with stress testing to address resource conflicts effectively.
* B. Load Testing and Portability Testing:
* Load testing alone does not cover the extreme conditions needed to identify resource conflicts.
Portability testing is not relevant to the identified risks.
* D. Maintainability Testing and Load Testing:
* Maintainability testing is not directly relevant to the immediate operational risks. Load testing is part of the solution but needs to be paired with stress testing.
References:
The ISTQB CTAL-TTA syllabus covers various non-functional testing types and their relevance to different risk scenarios. Reliability and stress testing are crucial in this context to ensure the system can handle concurrent applications and maintain data integrity under load.
Sources:
* ISTQB-CTAL-TTA Syllabus
* General knowledge on non-functional testing types and their applications.

NEW QUESTION # 126
The following user story has been written:
As a paying hotel guest
I want to see the charges that have been added to my bill
So that I can monitor my expenditure and know In advance how much I will have to pay when I check out The notes that have been added to It mention that It must be possible for the guest to get a printout of the bill, see It In a variety of currencies and set a flag in the hotel's billing system against any Item that they wish to challenge.
The following acceptance criteria have been defined:
1.The user shall be able to choose from the most commonly-used currencies.
2.The application must be accessible on most mobile platforms as well as on the hotel room's smart TV.
3.The hotel manager must be notified whenever a bill item is flagged by a hotel guest.
4.End-to-end response time for any individual request submitted by a user must not exceed 7 seconds.
Applying the INVEST technique to this user story, including its acceptance criteria, which of the following statements is correct?
SELECT ONE OPTION

A. The Testable and Small criteria of INVEST have not been satisfied
B. The Negotiable and Small criteria of INVEST have not been satisfied
C. The Testable and Negotiable criteria of INVEST have not been satisfied
D. The INVEST criteria have all been satisfied by this epic

Answer: A

Explanation:
According to the INVEST criteria, the Testable and Small criteria have not been satisfied for the user story provided. Option B is correct.
* INVEST Criteria: The INVEST model stipulates that user stories should be Independent, Negotiable, Valuable, Estimable, Small, and Testable.
* Analysis of the User Story: The scope of the user story and its acceptance criteria suggests it is too broad (thus not 'Small') and the details provided, especially regarding response times and system notifications, imply potential challenges in effectively testing the story (thus possibly not 'Testable') without further refinement or breaking down the story into smaller, more manageable pieces.
The size and complexity of the requirements indicate that the story might be better classified as an epic, needing decomposition into smaller, more specific user stories that can be more feasibly addressed within agile iterations .

NEW QUESTION # 127
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, has recently been released.
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 share the same web server.
The BestForFood system has been running live for several months, however the following significant non-functional defects have been recorded:
A) The layout and navigation of the BestForFood website was not considered by the users as consistent with BestForPensions and BestForMortgages B) Soon after delivering the BestForFood system the performance of both BestForPensions and BestForMortgages noticeably slowed C) The time taken to diagnose, repair and re-test production defects did not meet BestForFood service level agreements D) BestForFood performance was adversely impacted by unexpected growth in data volumes E) The time taken to install monthly builds into the production system exceeded agreed timescales.
Which TWO of these defects might have been prevented had portability testing and compatibility testing been employed?

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

Answer: B

Explanation:
Analysis:
The significant non-functional defects recorded for the BestForFood system indicate issues that could be mitigated by appropriate non-functional testing strategies:
* Portability Testing:
* Ensures that the application can operate in different environments without issues. This could have addressed the defect related to the layout and navigation consistency across different websites (Defect A).
* Compatibility Testing:
* Ensures that the application works well with other systems and environments. This could have helped in preventing the performance issues noticed in the BestForPensions and BestForMortgages websites after the deployment of BestForFood (Defect B).
Explanation of Incorrect Options:
* C. The time taken to diagnose, repair and re-test production defects: This is more related to maintainability and operational processes.
* D. BestForFood performance impacted by data growth: This is better addressed through performance and scalability testing.
* E. Installation time exceeding agreed timescales: This is related to deployment and operational efficiency.
References:
The ISTQB CTAL-TTA syllabus and standard non-functional testing practices emphasize the importance of portability and compatibility testing for ensuring smooth operation across different environments and systems.
Sources:
* ISTQB-CTAL-TTA Syllabus
* General knowledge on non-functional testing practices.

NEW QUESTION # 128
You have conducted static analysis on several new modules for an existing product. You are now executing test cases and are seeing inconsistent problems including crashes. Intermittent error messages are appearing.
Despite all your best efforts, you are not able to find reproducible scenarios to force these errors.
What problem in the code are you likely seeing?

A. Instrumented code
B. Poor error handling
C. Undefined variables
D. Wild pointers

Answer: D

Explanation:
Experiencing inconsistent problems such as crashes and intermittent error messages that do not have reproducible scenarios likely points to an issue with wild pointers. Wild pointers are pointers that do not point to a valid object of the appropriate type, often due to being uninitialized, pointing to deallocated memory, or having been overwritten accidentally.
* Explanation: Wild pointers can lead to unpredictable behavior because they may point to random or previously freed memory locations, causing the application to crash or behave erratically when these pointers are dereferenced.

NEW QUESTION # 129
A software company based in Spain that develops mobile applications expects many small updates in the future, e.g., due to changing configurations and customer feedback. The company also wants to focus on being able to change the software effectively and efficiently during initial development without introducing new defects.
Which maintainability sub-characteristic should be covered by the test approach during the initial development?

A. Re-usability
B. Modifiability
C. Modularity
D. Analysability

Answer: B

Explanation:
In the context of a software company in Spain developing mobile applications with an expectation of many small updates due to changing configurations and customer feedback, focusing on being able to change the software effectively and efficiently during initial development without introducing new defects is crucial. The maintainability sub-characteristic that should be covered by the test approach during the initial development is Modifiability.
Modifiability refers to the ease with which a software product can be modified to correct faults, improve performance or other attributes, or adapt to a changed environment. In a scenario where frequent and small updates are anticipated, ensuring that the software architecture and design support easy modification is vital. This not only aids in implementing changes more rapidly but also helps in maintaining the stability and integrity of the application, thereby preventing the introduction of new defects. The focus on modifiability ensures that the software remains responsive to customer feedback and evolving requirements without compromising on quality or performance.

NEW QUESTION # 130
......

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