Non-Functional Testing

5 minutes 5 Questions

Non-functional testing is an essential aspect of agile testing and quality assurance, focusing on evaluating the application's non-functional aspects, such as usability, performance, reliability, and security. These aspects help ensure that the software fulfills the intended purpose and meets the users' expectations in terms of system behavior, response times, and overall stability. Non-functional testing is often implemented in parallel with functional testing, allowing the team to identify and resolve issues that might affect the user experience or overall functionality of the application. By performing thorough non-functional testing, teams can optimize their applications, delivering a higher quality product that effectively meets the needs of the end-users.

Guide to Non-Functional Testing

Definition:
Non-functional testing is a type of software testing that verifies the non-functional aspects of a system such as system's performance, reliability, scalability, etc. This testing is designed to evaluate the readiness of a system according to criteria not covered by functional testing.

Importance:
Non-functional testing is essential because it assures the quality and performance of the software system in terms of its reliability, usability, efficiency, maintainability and portability. It also ensures that the system can handle and withstand a high user load.

How it works:
In non-functional testing, various factors are assessed that affects software application user experience such as system's loading time, its response time, network reaction speed, and its performance under peak load.

Exam Tips: Answering Questions on Non-Functional Testing:
1. Understand the question: Be clear about what is being asked. If it's about a specific type of non-functional testing, make sure you specify that in your answer.
2. Use relevant keywords: Use technical terms related to non-functional testing in your answers such as 'usability', 'scalability', 'performance', etc.
3. Provide examples: When possible, give examples to support your answers.
4. Keep your answers concise: Be straightforward and to the point in your responses. Avoid unnecessary information or details.

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Question 1

In a web-based e-commerce project, which non-functional testing method would best help you assess the user-friendliness of the website?

Usability testing Stress testing Performance testing Reliability testing Load testing Security testing

Correct Answer: Usability testing

Usability testing focuses on assessing how user-friendly the application interface is to users and provides insights into areas to improve user experience. Performance, security, reliability, stress, and load testing do not directly evaluate the user-friendliness of the interface.

Question 2

Your project team is developing a healthcare application that stores sensitive user data. Which non-functional testing method should your team prioritize to ensure user data remains secure?

Compatibility testing Performance testing Reliability testing Usability testing Security testing Load testing

Correct Answer: Security testing

Security testing is the non-functional testing type that identifies vulnerabilities in an application that could lead to data breaches or unauthorized access, making it most suitable to ensure sensitive user data remains secure. Performance, usability, compatibility, reliability, and load testing do not directly assess the application's security.

Question 3

A project manager is reviewing the team's approach to non-functional testing. The application must support 10,000 concurrent users. What type of non-functional testing best evaluates this requirement?

Load testing Security testing Localization testing Accessibility testing Usability testing Compatibility testing

Correct Answer: Load testing

Load testing measures the application's performance when multiple users access it concurrently, making it the appropriate non-functional testing type to ensure the application can support 10,000 concurrent users. Usability, security, compatibility, accessibility, and localization testing do not directly evaluate this requirement.

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