CTAL-TTA Exam Dumps : Certified Tester Advanced Level Technical Test Analyst

An ISTQB defined technique for identifying risks when defining a risk-based approach to testing the performance efficiency of a new application is to analyze the requirements to look for areas where performance efficiency requirements have not been well-defined. This technique ensures that testing efforts are focused on areas of the application that are critical for performance but may have insufficient coverage in terms of detailed requirements​​.

The correct option for addressing the issue of increasing test run times in a Continuous Integration (CI) environment is option C: reducing the extent to which automated tests go through the user interface, and selecting a subset of automated tests for the daytime CI runs while running many of the other tests in an overnight cycle.

Reducing User Interface Tests: By reducing the extent of tests that go through the user interface (UI) and using technical interfaces instead, you can significantly decrease the time each test takes. UI tests are generally slower due to rendering and user interaction simulations.

Optimizing Test Scheduling: By selecting only a subset of tests for daytime CI runs and scheduling extensive testing for overnight runs, the team can manage the test load better without compromising the frequency of integration, thus ensuring continuous testing does not become a bottleneck.

This dual approach effectively manages both the execution time of individual tests and the overall test process across the development cycle, maintaining the agility of the CI process without sacrificing the breadth of testing necessary for quality assurance .

In the scenario described, the project involves developing a system to control traffic lights at busy road junctions, focusing on safety-critical operations but deemed low-risk due to the team's high level of expertise.

Option B (4), characterized by ♦ (recommended) for Test Automation and ♦+ (highly recommended) for Exploratory Testing (manual) with ♦ (recommended) for Black-box Testing, is the most fitting for this project because:

Test Automation (Recommended): For a system managing traffic lights, automated tests can efficiently handle repetitive testing of scenarios involving various traffic densities and flow rates, ensuring consistent and thorough checking of system responses under controlled conditions.

Exploratory Testing (Highly Recommended): Given the critical nature of the system, exploratory testing allows testers to creatively challenge the system beyond pre-defined test cases, identifying potential real-world issues that might not be evident in scripted testing. This is particularly vital in safety-critical systems where unexpected behavior could have severe consequences.

Black-box Testing (Recommended): Black-box testing will ensure that the system meets its external specifications and behaves correctly as perceived from the outside, without the testers needing to know the internal workings. This is essential for verifying that the system's functionality aligns with its intended use in real-world traffic scenarios.

This approach, combining thorough automation with exploratory insights and specification-based validation, supports the project's safety-critical nature while leveraging the team’s expertise to manage the identified low risk .