CAD Testing & Debugging 3

Question 1

What is user acceptance testing (UAT)?

Accepted Answer

Testing performed by end users to validate the system meets their requirements

Answer

Testing performed by developers prior to release

Answer

Automated testing of the user interface layer

Answer

Security testing focused on user account permissions

Question 2

What does a NullPointerException (or null reference error) typically indicate when debugging?

Accepted Answer

Code is attempting to use a reference variable that has not been initialized

Answer

The application has exhausted available memory

Answer

A network connection has timed out unexpectedly

Answer

An array index is outside the valid range

Question 3

Which testing approach evaluates how a system behaves when pushed beyond its normal operational capacity?

Accepted Answer

Stress testing

Answer

Smoke testing

Answer

Sanity testing

Answer

Exploratory testing

Question 4

What is the primary purpose of static code analysis?

Accepted Answer

Examining source code without executing it to identify potential bugs and violations

Answer

Analyzing application performance during execution

Answer

Confirming that the code compiles without errors

Answer

Measuring code coverage during test suite execution

Question 5

What is a 'smoke test' in the software development lifecycle?

Accepted Answer

A quick preliminary test to verify basic functionality before deeper testing begins

Answer

A test performed after a major production incident

Answer

A test that simulates high CPU and memory pressure

Answer

A comprehensive security vulnerability scan

Question 6

What does 'test isolation' mean in unit testing best practices?

Accepted Answer

Ensuring each test runs independently without depending on the outcome of other tests

Answer

Running tests in a separate physical data center

Answer

Restricting access to test data for security purposes

Answer

Storing test code in a separate repository from production code

Question 7

Which category of software defect is typically the most difficult to reproduce and debug?

Accepted Answer

Heisenbugs such as race conditions that change behavior when observed

Answer

Syntax errors caught at compile time

Answer

Logic errors producing wrong output

Answer

Compilation errors reported by the build system