Full-Stack Development Quality Control & Assurance 5

Question 1

Which Playwright method waits for a network request to complete before proceeding in a test?

Accepted Answer

page.waitForResponse()

Answer

`page.waitForResponse()` resolves when a matching network response is received, avoiding hard-coded sleeps in E2E tests.

Question 2

What is the purpose of a 'test fixture' in automated testing?

Accepted Answer

A fixed, known state of data and environment set up before tests run

Answer

A test fixture establishes a repeatable, known precondition (database state, files, mock services) so tests run deterministically.

Question 3

Which metric measures the average time it takes to restore service after a production failure?

Accepted Answer

MTTR (Mean Time To Recovery)

Answer

MTTR measures average recovery time from incidents and is a key DORA metric reflecting the effectiveness of incident response and rollback processes.

Question 4

In accessibility testing, what does WCAG 2.1 Level AA compliance require for color contrast?

Accepted Answer

4.5:1 ratio for normal text and 3:1 for large text

Answer

WCAG 2.1 AA requires a 4.5:1 contrast ratio for normal text and 3:1 for large text (18pt or 14pt bold) to ensure readability.

Question 5

What does a 'load test' specifically measure compared to a 'stress test'?

Accepted Answer

Load tests measure system behavior under expected traffic; stress tests push beyond capacity to find breaking points

Answer

Load testing validates performance under anticipated production traffic, while stress testing intentionally exceeds capacity to find failure modes and recovery behavior.

Full-Stack Development Practice Test

Full-Stack Development Practice Test

Full-Stack Development Quality Control & Assurance 5