Mettl Test Design & Development 2

Question 1

Which test design technique is most effective for identifying defects at the boundaries of input ranges?

Accepted Answer

Boundary Value Analysis

Answer

Boundary Value Analysis focuses on the edges of input ranges where defects are statistically most likely to occur.

Question 2

In a decision table, what does a 'don't care' condition (often marked as '-') signify?

Accepted Answer

The condition's value does not affect the outcome for that rule

Answer

A 'don't care' condition means the outcome is the same regardless of whether that condition is true or false.

Question 3

Which technique is most appropriate when testing a login system that locks an account after 3 failed attempts?

Accepted Answer

State Transition Testing

Answer

State Transition Testing models systems that change behavior based on history or state, like account lockout scenarios.

Question 4

What is the primary purpose of a traceability matrix in test design?

Accepted Answer

Link test cases to their corresponding requirements

Answer

A traceability matrix maps each requirement to test cases, ensuring all requirements are covered and changes are tracked.

Question 5

A software module has 5 conditions, each independently true or false. How many rows would a full decision table have?

Accepted Answer

32

Answer

With 5 binary conditions, the full decision table has 2^5 = 32 possible combinations of inputs.

Mettl Practice Test