A team is testing a fly-by-wire flight control system. The system has redundant sensors and actuators, and the safety requirements specify that the system must continue safe operation if one sensor fails. The test manager must design tests to verify this fault tolerance. The team has access to a full hardware-in-the-loop simulator. Which approach best validates the fault tolerance requirement?

Run a simulation with all sensors operating normally to confirm the system performs as expected.

Perform a code review of the sensor fusion algorithm to identify potential logic errors.

Inject a fault into one sensor during a simulated flight maneuver and verify the system continues to operate safely using the redundant sensor.

Test each sensor individually to confirm they all produce correct readings under normal conditions.

What is the primary purpose of reporting safety readiness metrics to stakeholders?

To justify the testing budget to management.

To provide evidence that the system has been tested sufficiently to support a decision on release.

To show that the testing team has been productive.

To compare the testing team's performance with other teams.

Which scenario best describes a fault injection test?

Testing the system with a large number of users to check performance.

Reviewing the code to find potential defects.

Simulating a sensor failure to verify that the system enters a safe state.

Testing the system with valid and invalid input data to check error handling.

In risk-based testing for safety-critical systems, what is the primary factor that determines the priority of test execution?

The number of test cases that can be executed in a given time

The cost of developing the test cases

The likelihood and severity of potential harm from a failure

The preference of the test manager

When applying risk-based testing to a safety-critical system, which activity is performed first?

Execute all test cases in the order they were written

Identify and analyze potential hazards and their associated risks

Select the test automation tools to be used

Develop a complete set of test cases for every requirement

Certified Tester Expert Level Test Management Strategic Test Management

Domain 2Objective 6

Safety-Critical Systems CTEL-TM-SM Practice Questions (Page 8)

Part of the Testing Considerations for Domain and Project Factors domain, which makes up ~46% of our current practice bank.

42questions here

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12concepts

Questions 36–40

36expert · hard
A team is testing a fly-by-wire flight control system. The system has redundant sensors and actuators, and the safety requirements specify that the system must continue safe operation if one sensor fails. The test manager must design tests to verify this fault tolerance. The team has access to a full hardware-in-the-loop simulator. Which approach best validates the fault tolerance requirement?
Select an answer first
37foundation · easy
What is the primary purpose of reporting safety readiness metrics to stakeholders?
Select an answer first
38foundation · easy
Which scenario best describes a fault injection test?
Select an answer first
39foundation · easy
In risk-based testing for safety-critical systems, what is the primary factor that determines the priority of test execution?
Select an answer first
40foundation · easy
When applying risk-based testing to a safety-critical system, which activity is performed first?
Select an answer first

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