Software Testing Case Studies & Practical Application 3

Question 1

A healthcare system must process patient records within 2 seconds under a load of 500 concurrent users. Which test type directly validates this requirement?

Accepted Answer

Performance load testing

Answer

Load testing validates system behavior under expected concurrency levels and measures response times against defined performance targets.

Question 2

After a critical production defect is fixed, the team runs only the tests directly related to the fix to save time. What risk does this approach carry?

Accepted Answer

The fix may have introduced regressions in unrelated areas

Answer

Running only fix-related tests risks missing regressions—unintended side effects of the change that break previously working functionality.

Question 3

A SaaS company's API starts returning incorrect totals only when more than 1,000 line items are included in an order. Which technique would most directly identify this defect during testing?

Accepted Answer

Boundary value analysis

Answer

Boundary value analysis focuses on values at the edges of input ranges—like exactly 1,000 and 1,001 items—where many defects cluster.

Question 4

A tester finds that a login form accepts a blank username. The correct behavior should be to show a validation error. This defect is best classified as:

Accepted Answer

Functional defect

Answer

A functional defect is a deviation from the specified functional behavior, such as failing to enforce required field validation on login.

Question 5

A new tester is asked to explore a payment module without any scripts or predefined steps. This approach is best described as:

Accepted Answer

Exploratory testing

Answer

Exploratory testing is simultaneous learning, test design, and execution without predefined scripts, relying on the tester's skill and domain knowledge.

Software Testing Practice Test

Software Testing Practice Test

Software Testing Case Studies & Practical Application 3