ISTQB Certified Tester Advanced Level Technical Test Analyst CTAL-TTA Exam Questions

Page: 1 / 14
Total 175 questions
Question 1

You are responsible for the non-functional testing of a website supporting a popular restaurant chain. Due to the rapid expansion of the number of restaurants in the chain, the company is expecting the peak number of concurrent website views to more than triple in the next 6 months. As a result, it has purchased two further production servers to support the existing one. A new hardware release has been scheduled for which the following product risk has been recorded:

{Insert Table 2)

Which one of the following non-functional test typos would be BEST to mitigate this risk?



Answer : C

In this scenario, the risk is related to the anticipated increase in concurrent website views and whether the additional servers will be sufficient to handle the increased load. This situation requires a specific type of non-functional testing to ensure that the system can effectively scale with the increased demand.

Analysis of Options:

Load Testing:

Load testing involves simulating a specified number of users to see how the system performs under expected loads. While this is useful, it is not the best fit for this scenario where the primary concern is future scaling capacity.

Adaptability Testing:

Adaptability testing assesses how well the system adapts to different environments or conditions. This is not directly related to the risk of handling increased concurrent users and is therefore not the best choice.

Scalability Testing (Option C):

Scalability testing specifically evaluates how well the system can scale up or down in response to an increase in load. This type of testing is designed to verify that the system can handle growth in users and data volume effectively, making it the best choice to mitigate the risk described.

Reliability Testing:

Reliability testing focuses on the system's ability to function correctly over time under certain conditions. While reliability is important, it does not directly address the issue of handling increased concurrent usage.

Mitigating the Risk:

Given the risk of the servers potentially not being adequate to handle the increased concurrent website views, scalability testing is the most appropriate type of non-functional testing. It will help determine if the two additional servers, along with the existing one, can support the anticipated growth in user traffic without performance degradation.


The ISTQB CTAL-TTA syllabus and standard non-functional testing practices emphasize the importance of scalability testing when assessing the ability of a system to handle increased load and user concurrency.

Sources:

ISTQB-CTAL-TTA Syllabus

General knowledge on non-functional testing types and their applications.

Question 2

You have identified existing test cases that require re-factoring, Which is the NEXT task you should perform?

SELECT ONE OPTION



Answer : D

Once existing test cases have been identified for refactoring, the next step is typically to make changes to the internal structure of these tests to improve their maintainability. This involves revising the code or scripts to make them cleaner, more efficient, and easier to understand, which helps in maintaining them over time as the software evolves. This process may also involve updating test data or dependencies to ensure that the tests remain robust and reliable .


Question 3

The last release of a hotel booking website resulted in poor system performance when hotel searches reached peak volumes. To address these problems in the forthcoming release, changes to the system architecture are to be implemented as follows:

Change 1 - Provision of a single Internet service using multiple servers, rather than a single server, to maximize throughput and minimize response time during peak volumes

Change 2 - Prevention of unnecessary database calls for objects that were not immediately needed by the calling applications. Achieved by not automatically creating database connections at the start of processing, instead only just before the data is required.

The system architecture document has been drafted and as Technical Test Analyst you have been invited to participate in its review. Which of the following review checklist items is MOST likely to identify any defects in the proposed system architecture for Change 1?



Answer : B

Analysis:

For Change 1, which involves using multiple servers to maximize throughput and minimize response time, the key concern is how the load is distributed across these servers.

B . Load balancing:

Load balancing is the process of distributing network or application traffic across multiple servers to ensure no single server becomes overwhelmed. It is crucial for maximizing throughput and minimizing response times, particularly during peak volumes.

Explanation of Incorrect Options:

A . Connection pooling:

This is related to managing database connections efficiently but is not directly relevant to distributing web server traffic.

C . Distributed processing:

This refers to dividing processing tasks across multiple processors or machines but is not specific to managing web server load.

D . Caching:

Caching helps improve performance by storing frequently accessed data in memory, reducing the need to retrieve it from the database, but it does not address load distribution across servers.


The ISTQB CTAL-TTA syllabus and standard practices in reviewing system architecture emphasize the importance of load balancing for managing server traffic and ensuring optimal performance during peak loads.

Sources:

ISTQB-CTAL-TTA Syllabus

General knowledge on system architecture and load balancing.

Question 4

Consider the following code segments.

Segment 1:

If a > b then setc = 12

elseif c >7 set c = 5

endif

Segment 2: setc= 12 for n = 1 to c

display c

endfor

Segment 3:

If (a > b) or (c < d) then

set c = 12

else

set c = 5

endlf

Segment 4:

set y = 4

call (segments)

segments:

start

for I = 1 to y

print y

endfor

end

Which segment would receive the highest cyclomatic complexity value?



Answer : C

Cyclomatic complexity is a measure of the number of linearly independent paths through a program's source code. Segment 3 has two conditions: if (a > b) or (c < d) and the associated else. This structure introduces multiple decision points, thereby increasing the number of potential execution paths. Comparatively, the other segments have fewer conditions and straightforward loops, which contribute to a lower cyclomatic complexity. Segment 3, with its compound condition and branching logic, likely has the highest cyclomatic complexity.


Question 5

Listed below are some possible findings from static analysis of a component containing approximately 1,000 lines of code. Which combination suggests that the component does NOT need refactoring for better maintainability?

A) Low measure of coupling.

B) Low measure of cohesion.

C) Low measure of commenting.

D) Low measure of complexity.

E) High measure of coupling.

F) High measure of cohesion.

G) High measure of commenting.

H) High measure of complexity.



Answer : D

When evaluating a component for maintainability, several metrics are considered:

Coupling: Refers to the degree of interdependence between software modules. Lower coupling is preferred for maintainability.

Cohesion: Refers to how closely related the responsibilities of a single module are. Higher cohesion within modules is preferred.

Commenting: Refers to the presence of comments within the code. While useful, excessive commenting is not necessarily an indicator of maintainability.

Complexity: Refers to the complexity of the code, often measured by metrics like cyclomatic complexity. Lower complexity is preferred.

Given these metrics:

d. Low measure of complexity: Indicates the code is simple and straightforward, which enhances maintainability.

f. High measure of cohesion: Indicates that modules have clear, well-defined responsibilities, enhancing maintainability.

h. High measure of complexity: This should generally be low for better maintainability, but in this context, the assumption is an erroneous inclusion in the preferred list.

Thus, the best combination suggesting that the component does NOT need refactoring for better maintainability is d, f, h.


The selection of metrics and their desired values are based on software engineering principles covered in the ISTQB CTAL-TTA syllabus, which emphasizes low complexity and high cohesion for maintainable software design.

Question 6

Your team is developing an e-shop application (the SUT) that will use a third-party service to process payments via an API. This third-party payment gateway is itself still under development Which statement contains a pair of benefits that can BOTH be expected from service virtualization in this circumstance'

SELECT ONE OPTION



Answer : C

Service virtualization in the context of developing an e-shop application with an external payment gateway (still under development) offers significant benefits. It allows for realistic testing of the System Under Test (SUT) by simulating the behavior of the still-developing payment gateway, thus enabling testing to proceed without the actual service being available. Additionally, it simplifies the test environment by reducing the complexities associated with integrating and maintaining a live external service during development and testing phases .


Question 7

You have been assigned the task of conducting the performance efficiency testing for a new Internet toolbar. Which of the following would be a valid test condition for this quality characteristic?



Answer : B

A valid test condition for the performance efficiency testing of a new Internet toolbar is memory usage. Testing how much memory the toolbar consumes during operation is essential to ensure it does not adversely affect the performance of the host system, particularly when the toolbar is expected to run concurrently with other applications .


Page:    1 / 14   
Total 175 questions