Complete guide to preparing for QA interviews: a practical guide from technical questions to behavioral questions

1. Three major assessment aspects of QA interviews

2. Technical questions: core knowledge required

• test level

  Differences and applicable scenarios of unit testing, integration testing, system testing, and acceptance testing

• Test type

  Functional testing, regression testing, smoke testing, performance testing, security testing

• test design techniques

  Equivalent segmentation, boundary value analysis, decision table, state transition diagram

• test pyramid

  Why are unit tests the most and E2E tests the least?

• forward test

  You can log in successfully with the correct account and password

• negative test

  Wrong password, blank field, SQL injection attempt

• boundary value

  Minimum and maximum password restrictions, special character processing

• non-functional testing

  Login response time, continuous error locking mechanism, multiple devices logged in at the same time

3. Automation Tools Exam Questions

• Web UI automation

  Differences and selection considerations between Selenium, Cypress, and Playwright

• API testing

  Usage scenarios of Postman, RestAssured, pytest + requests

• mobile device

  Applicable scenarios for Appium, XCUITest, and Espresso

• CI/CD

  How to integrate testing with Jenkins, GitHub Actions, and GitLab CI

• Write simple automation scripts in Python or Java

  Write simple automation scripts in Python or Java

• Implementation of Page Object Model design pattern

  Implementation of Page Object Model design pattern

• The concept and implementation of data-driven testing

  The concept and implementation of data-driven testing

• Basic SQL queries (JOIN, GROUP BY, subqueries)

  Basic SQL queries (JOIN, GROUP BY, subqueries)

4. Situational questions: showing test thinking

• "A serious bug was discovered before going online, but it will be released tomorrow. How do you deal with it?"

  Assessment of risk assessment and communication skills

• "The developer disagrees with the bug you reported, saying it is a feature and not a bug. What should I do?"

  Assess cross-department communication skills

• "Time is limited and only half of the functions can be tested. How do you choose the test range?"

  Assessment priority judgment and risk-oriented testing

• "How do you start testing when you take over an old system with no documentation?"

  Assess exploratory testing abilities

5. Behavioral questions: Show soft power

• "Describe a time when you found a major bug"

  Prepare an impactful bug story

• "How do you work with the development team"

  Emphasis on communication, constructive feedback, and common goals

• "What do you do when you encounter uncertain needs?"

  Demonstrate proactive clarification and non-guessing attitude

• "How do you continue to learn new testing techniques"

  Share your learning resources and methods

6. Preparation plan for the week before the interview

• Day 1-2

  Review test theory and organize explanations of common test terms

• Day 3-4

  Practice test case design and do at least 5 exercises with different functions

• Day 5

  Prepare implementation examples of automation tools to ensure smooth presentation

• Day 6

  Prepare 3-5 STAR stories covering bug discovery, teamwork, and conflict resolution

• Day 7

  Mock interviews, practice with a friend or in front of a mirror, pay attention to the clarity and confidence of expression

7. FAQ