Analytical Strategies CTEL-TM-SM Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In a decision table, what does a 'rule' represent?

   • AA system state that triggers an action
   • BA test case that covers all conditions
   • CA single condition that must be true
   • DA unique combination of condition values and the corresponding actions
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What is a key consideration when integrating multiple analytical strategies?

   • AEnsuring that each strategy is applied to the areas where it is most effective
   • BSelecting strategies based on the testers' preferences
   • CUsing the same strategy for all test levels to maintain consistency
   • DAvoiding the use of more than two strategies to keep the plan simple
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   In state transition testing, what is a 'transition'?

   • AA condition that must be true for a test to pass
   • BA combination of input values that produces an output
   • CA change from one state to another triggered by an event
   • DA failure mode that causes the system to stop
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A test team is testing a configuration screen for a network router. The screen has three parameters: protocol (TCP, UDP, ICMP), encryption (AES, DES, None), and authentication (RADIUS, TACACS+, Local). The team wants to systematically partition the input domain and generate test cases that cover all combinations of these parameters. However, the team is concerned about the total number of test cases (3 x 3 x 3 = 27). They want a structured method to visualize the partitions and generate a reduced but effective set of test cases. Which approach is most appropriate?

   • AUse fault tree analysis to identify the most critical parameter combinations.
   • BUse the classification tree method to partition the input domain and then apply pairwise testing to reduce the number of test cases.
   • CUse decision tables to represent all combinations and generate a test case for each column.
   • DUse state transition testing to model the configuration states and transitions.
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   During testing of a nuclear power plant control system, a critical safety event occurred: the reactor shutdown system failed to activate when a high temperature was detected. The test manager needs to determine the root causes of this failure to guide further testing. The team suspects that the failure could be due to a sensor malfunction, a software bug, or a combination of both. The test manager wants to use fault tree analysis (FTA) to systematically analyze the failure. What is the most appropriate way to use FTA in this situation?

   • AUse FTA to calculate the probability of the reactor shutdown failure based on the failure rates of the sensor and software.
   • BStart with the top event (reactor shutdown failure) and trace backward through the system to identify all possible combinations of sensor and software failures that could cause it.
   • CStart with the sensor malfunction and analyze its effects on the system to determine if it could cause the reactor shutdown failure.
   • DUse FTA to generate test cases for all possible combinations of sensor and software inputs.
   Reveal Solution Discussion Select an answer first