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

Answer : B

For a Medium risk mission- or safety-critical system, the best testing approach includes a combination of automated tests, exploratory tests, and manual black-box tests. Option B is the most comprehensive, advocating for automated tests to ensure reliability and repeatability, highly recommending exploratory tests to cover unforeseen scenarios, and recommending manual black-box tests to cover standard use cases. This multifaceted approach ensures thorough testing coverage essential for medium risk, safety-critical systems.

Answer : C

In the pseudo-code provided, we need to identify data flow anomalies, which typically occur when variables are used improperly in terms of their definition, usage, or re-definition.

Analyzing the pseudo-code step by step:

Lines 1-4 initialize variables LOYALTY_RATING, COUNT_CRUISES, CRUISE_LENGTH, and CRUISE_ACCOM_TYPE to 0.

Lines 6-7 read the customer's cruise history.

Line 8 begins a WHILE loop that continues until COUNT_CRUISES is -1.

Lines 9-10 read the next cruise.

Lines 11-19 check the CRUISE_ACCOM_TYPE and update CRUISE_CREDITS accordingly.

Line 20 decrements COUNT_CRUISES.

Line 21 ends the WHILE loop.

Line 22 calculates LOYALTY_RATING by dividing CRUISE_CREDITS by COUNT_CRUISES.

Lines 23-24 output the CRUISE_CREDITS.

Line 25 ends the program.

Data Flow Anomalies:

Line 14: CRUISE_CREDITS is re-defined before being used.

The initial problem here is that CRUISE_CREDITS should be assigned a value before it is incremented in lines 12, 15, and 17. The code does not show any prior definition (initialization) for CRUISE_CREDITS before these increments.

Line 27: LOYALTY_RATING is defined but not subsequently used.

After LOYALTY_RATING is calculated in line 22, it is not used again. This means the calculated value serves no purpose in the program as it stands.

By considering the above points, we can confirm that the correct option is C:

Line 14: CRUISE_CREDITS is re-defined before being used (it should have been initialized before the WHILE loop or just before its first usage inside the loop).

Line 27 (Line 22 in provided pseudo-code): LOYALTY_RATING is defined (calculated) but not subsequently used.

This matches the reference provided in the ISTQB sample exam answers, confirming that C is the correct answer.

ISTQB CTAL-TTA Sample Exam Questions

ISTQB Exam Structures and Rules

ISTQB CTAL-TTA Sample Exam Answers

ISTQB-CTAL-TTA Syllabus

ISTQB Exam Structure Tables

Answer : B

In a critical system that handles financial transactions with complex logic, ensuring thorough testing coverage is crucial. Here's an analysis of the options:

A . Multiple Condition coverage: This provides the highest level of coverage by testing all possible combinations of conditions. However, it can be very time-consuming and is often impractical for complex systems due to the sheer number of test cases required.

B . MC/DC coverage: Modified Condition/Decision Coverage is a compromise between multiple condition coverage and decision coverage. It ensures that each condition within a decision has been shown to independently affect the outcome of that decision. This level of coverage is often required in safety-critical systems because it provides thorough testing without the excessive test case count of multiple condition coverage.

C . Decision coverage: This ensures that every decision (if statement) has been executed in both true and false directions. While useful, it may not be sufficient for complex systems where the interactions between conditions are critical.

D . Statement coverage: This ensures that every executable statement in the code has been executed. It is the most basic level of coverage and is generally not sufficient for complex systems, especially those that are critical to an organization's finances.

Given the critical nature of the system and the need for a balance between thoroughness and practicality, the best option is B. MC/DC coverage. This ensures a high level of coverage that is more practical than multiple condition coverage while providing more assurance than decision or statement coverage.

Answer : A

Analysis:

When performance efficiency is a critical requirement, the involvement of the Technical Test Analyst (TTA) is crucial from the early stages of the project to ensure performance goals are met.

Key Activity:

A . Designing an operational profile that does not exceed hardware, software, and network bandwidth test environment budgets:

This activity involves creating a realistic operational profile that reflects how the system will be used in production. It ensures that performance testing is aligned with actual usage patterns and resource constraints. By doing this early, TTAs can identify potential performance issues and make necessary adjustments before development progresses too far.

Explanation of Incorrect Options:

B . Participating in code reviews that focus on database and component interactions as well as error handling:

While useful, this is more relevant to ensuring code quality and correctness rather than the first step in addressing performance efficiency.

C . Assisting the developers in determining CPU utilization for critical components during component testing:

This is a more detailed activity that follows the establishment of the operational profile and overall performance requirements.

D . Implementing the performance tool's load test scripts for execution in a production-like environment during system test:

This occurs later in the testing process, after the operational profile has been designed and the initial performance considerations have been addressed.

The ISTQB CTAL-TTA syllabus highlights the importance of designing operational profiles and understanding resource constraints as initial steps in performance testing.

Sources:

ISTQB-CTAL-TTA Syllabus

General knowledge on performance testing practices.

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.

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 .

Answer : B, D

Considering the functionalities described for the Health Insurance Calculation system, the keywords would represent the main actions that can be performed in the system. 'Enter_Client' would be a keyword for entering new client information, which is a primary feature of the system as described. 'Select_Client' would be used to retrieve information for an existing client using the client's ID number, which is another main functionality. Other options such as 'Remove_Client', 'Print_Premium', and 'Exclude_Client' are not explicitly mentioned in the provided system functionalities, therefore, 'Enter_Client' and 'Select_Client' are the most likely keywords for automation.