Explore Topics

Non-Functional Testing Interview Questions and Answers

Last Updated : 03 Sep, 2024 - prepared by name
Edit Suggestions

Table of Content

Oops Interview Questions for Freshers

1. Explain what is non-functional testing

Nonfunctional testing plays a crucial role in ensuring client satisfaction. Used to evaluate non-functional parameters such as reliability, performance, usability, and load capacity of the software. Nonfunctional testing typically occurs after functional testing and primarily assesses the software's response time and efficiency.

2. What is the importance of non-functional testing after functional testing?

Both functional and non-functional testing plays a significant role in software testing. Functional testing focuses on assessing the system's functionality and identifying any internal bugs or defects during software execution. In contrast, non-functional testing evaluates the software's performance in external environments.

Non-functional testing establishes the foundation for software installation, setup, and execution. It also involves collecting and producing the measurements and metrics used for internal research and development

3. What type of parameters are tested under Non-functional testing?

  • Performance
  • Load Testing
  • Security
  • Portability
  • Accountability
  • Reliability
  • Efficiency

4. what are the advantages of non-functional testing?

  • Security is a fundamental aspect of any software application, and non-functional testing enhances this security by safeguarding against cyber-attacks.
  • It assesses the system's loading capacity, ensuring that multiple users can access the system simultaneously without issues.
  • As a result, non-functional testing contributes to improved system performance.
  • Additionally, there is no need to rewrite test cases, as they typically remain unchanged.
  • Compared to other testing processes, non-functional testing often requires less time to execute

5. What tools are commonly used for non-functional testing?

Some common tools for non-functional testing include:

Popularly used non-functional tools are listed below; these tools are used to check non-functional scenarios.

  • Load Testing: Apache JMeter, LoadRunner, and Gatling.
  • Performance Testing: NeoLoad and Silk Performer.
  • Security Testing: OWASP ZAP, Burp Suite, and Nessus.
  • Usability Testing: UserTesting, Crazy Egg, and Lookback.

6. What challenges do you face in non-functional testing?

Some common challenges in non-functional testing include:

Some commonly facing challenges while working in non-functional testing are:

  • It is hard to Replicate real-world conditions and user responses
  • Creating an environment that accurately models the product is very difficult.
  • Finding and measuring relevant metrics effectively
  • Managing the costs and resources required for comprehensive non-functional testing.

7. Can you explain the difference between load testing and stress testing?

Load testing involves evaluating the system's performance under expected workload conditions to ensure it can handle the anticipated number of users. Stress testing, on the other hand, pushes the system beyond its limits to determine its breaking point and assess how it handles extreme conditions.

8. What are the key types of non-functional testing?

The key aspects of non-functional testing include:

  • Performance Testing: Evaluate the system’s speed, responsiveness, and stability in different scenarios
  • Load Testing: Analyze the system’s behavior under normal and extreme load conditions
  • Stress Testing: Calculate the system’s working under extreme and overload conditions
  • Usability Testing: Assesses the application's user-friendliness and intuitiveness for end-users.
  • Security Testing: Identifies potential vulnerabilities and ensures the application’s security against threats.
  • Compatibility Testing: Verifies the application’s functionality across various devices, browsers, and operating systems.

Oops Interview Questions for 2 Years Experience

1. Explain what is non-functional testing

Nonfunctional testing plays a crucial role in ensuring client satisfaction. Used to evaluate non-functional parameters such as reliability, performance, usability, and load capacity of the software. Nonfunctional testing typically occurs after functional testing and primarily assesses the software's response time and efficiency.

2. What is the importance of non-functional testing after functional testing?

Both functional and non-functional testing plays a significant role in software testing. Functional testing focuses on assessing the system's functionality and identifying any internal bugs or defects during software execution. In contrast, non-functional testing evaluates the software's performance in external environments.

Non-functional testing establishes the foundation for software installation, setup, and execution. It also involves collecting and producing the measurements and metrics used for internal research and development

3. What type of parameters are tested under Non-functional testing?

  • Performance
  • Load Testing
  • Security
  • Portability
  • Accountability
  • Reliability
  • Efficiency

4. what are the advantages of non-functional testing?

  • Security is a fundamental aspect of any software application, and non-functional testing enhances this security by safeguarding against cyber-attacks.
  • It assesses the system's loading capacity, ensuring that multiple users can access the system simultaneously without issues.
  • As a result, non-functional testing contributes to improved system performance.
  • Additionally, there is no need to rewrite test cases, as they typically remain unchanged.
  • Compared to other testing processes, non-functional testing often requires less time to execute

5. What tools are commonly used for non-functional testing?

Some common tools for non-functional testing include:

Popularly used non-functional tools are listed below; these tools are used to check non-functional scenarios.

  • Load Testing: Apache JMeter, LoadRunner, and Gatling.
  • Performance Testing: NeoLoad and Silk Performer.
  • Security Testing: OWASP ZAP, Burp Suite, and Nessus.
  • Usability Testing: UserTesting, Crazy Egg, and Lookback.

6. What challenges do you face in non-functional testing?

Some common challenges in non-functional testing include:

Some commonly facing challenges while working in non-functional testing are:

  • It is hard to Replicate real-world conditions and user responses
  • Creating an environment that accurately models the product is very difficult.
  • Finding and measuring relevant metrics effectively
  • Managing the costs and resources required for comprehensive non-functional testing.

7. Can you explain the difference between load testing and stress testing?

Load testing involves evaluating the system's performance under expected workload conditions to ensure it can handle the anticipated number of users. Stress testing, on the other hand, pushes the system beyond its limits to determine its breaking point and assess how it handles extreme conditions.

8. What are the key types of non-functional testing?

The key aspects of non-functional testing include:

  • Performance Testing: Evaluate the system’s speed, responsiveness, and stability in different scenarios
  • Load Testing: Analyze the system’s behavior under normal and extreme load conditions
  • Stress Testing: Calculate the system’s working under extreme and overload conditions
  • Usability Testing: Assesses the application's user-friendliness and intuitiveness for end-users.
  • Security Testing: Identifies potential vulnerabilities and ensures the application’s security against threats.
  • Compatibility Testing: Verifies the application’s functionality across various devices, browsers, and operating systems.

Oops Interview Questions for 10 Years Experience

1. Explain what is non-functional testing

Nonfunctional testing plays a crucial role in ensuring client satisfaction. Used to evaluate non-functional parameters such as reliability, performance, usability, and load capacity of the software. Nonfunctional testing typically occurs after functional testing and primarily assesses the software's response time and efficiency.

2. What is the importance of non-functional testing after functional testing?

Both functional and non-functional testing plays a significant role in software testing. Functional testing focuses on assessing the system's functionality and identifying any internal bugs or defects during software execution. In contrast, non-functional testing evaluates the software's performance in external environments.

Non-functional testing establishes the foundation for software installation, setup, and execution. It also involves collecting and producing the measurements and metrics used for internal research and development

3. What type of parameters are tested under Non-functional testing?

  • Performance
  • Load Testing
  • Security
  • Portability
  • Accountability
  • Reliability
  • Efficiency

4. what are the advantages of non-functional testing?

  • Security is a fundamental aspect of any software application, and non-functional testing enhances this security by safeguarding against cyber-attacks.
  • It assesses the system's loading capacity, ensuring that multiple users can access the system simultaneously without issues.
  • As a result, non-functional testing contributes to improved system performance.
  • Additionally, there is no need to rewrite test cases, as they typically remain unchanged.
  • Compared to other testing processes, non-functional testing often requires less time to execute

5. What tools are commonly used for non-functional testing?

Some common tools for non-functional testing include:

Popularly used non-functional tools are listed below; these tools are used to check non-functional scenarios.

  • Load Testing: Apache JMeter, LoadRunner, and Gatling.
  • Performance Testing: NeoLoad and Silk Performer.
  • Security Testing: OWASP ZAP, Burp Suite, and Nessus.
  • Usability Testing: UserTesting, Crazy Egg, and Lookback.

6. What challenges do you face in non-functional testing?

Some common challenges in non-functional testing include:

Some commonly facing challenges while working in non-functional testing are:

  • It is hard to Replicate real-world conditions and user responses
  • Creating an environment that accurately models the product is very difficult.
  • Finding and measuring relevant metrics effectively
  • Managing the costs and resources required for comprehensive non-functional testing.

7. Can you explain the difference between load testing and stress testing?

Load testing involves evaluating the system's performance under expected workload conditions to ensure it can handle the anticipated number of users. Stress testing, on the other hand, pushes the system beyond its limits to determine its breaking point and assess how it handles extreme conditions.

8. What are the key types of non-functional testing?

The key aspects of non-functional testing include:

  • Performance Testing: Evaluate the system’s speed, responsiveness, and stability in different scenarios
  • Load Testing: Analyze the system’s behavior under normal and extreme load conditions
  • Stress Testing: Calculate the system’s working under extreme and overload conditions
  • Usability Testing: Assesses the application's user-friendliness and intuitiveness for end-users.
  • Security Testing: Identifies potential vulnerabilities and ensures the application’s security against threats.
  • Compatibility Testing: Verifies the application’s functionality across various devices, browsers, and operating systems.

Oops Interview Questions and Answers - FAQs

1. Explain what is non-functional testing

Nonfunctional testing plays a crucial role in ensuring client satisfaction. Used to evaluate non-functional parameters such as reliability, performance, usability, and load capacity of the software. Nonfunctional testing typically occurs after functional testing and primarily assesses the software's response time and efficiency.

2. What is the importance of non-functional testing after functional testing?

Both functional and non-functional testing plays a significant role in software testing. Functional testing focuses on assessing the system's functionality and identifying any internal bugs or defects during software execution. In contrast, non-functional testing evaluates the software's performance in external environments.

Non-functional testing establishes the foundation for software installation, setup, and execution. It also involves collecting and producing the measurements and metrics used for internal research and development

3. What type of parameters are tested under Non-functional testing?

  • Performance
  • Load Testing
  • Security
  • Portability
  • Accountability
  • Reliability
  • Efficiency

4. what are the advantages of non-functional testing?

  • Security is a fundamental aspect of any software application, and non-functional testing enhances this security by safeguarding against cyber-attacks.
  • It assesses the system's loading capacity, ensuring that multiple users can access the system simultaneously without issues.
  • As a result, non-functional testing contributes to improved system performance.
  • Additionally, there is no need to rewrite test cases, as they typically remain unchanged.
  • Compared to other testing processes, non-functional testing often requires less time to execute

5. What tools are commonly used for non-functional testing?

Some common tools for non-functional testing include:

Popularly used non-functional tools are listed below; these tools are used to check non-functional scenarios.

  • Load Testing: Apache JMeter, LoadRunner, and Gatling.
  • Performance Testing: NeoLoad and Silk Performer.
  • Security Testing: OWASP ZAP, Burp Suite, and Nessus.
  • Usability Testing: UserTesting, Crazy Egg, and Lookback.

6. What challenges do you face in non-functional testing?

Some common challenges in non-functional testing include:

Some commonly facing challenges while working in non-functional testing are:

  • It is hard to Replicate real-world conditions and user responses
  • Creating an environment that accurately models the product is very difficult.
  • Finding and measuring relevant metrics effectively
  • Managing the costs and resources required for comprehensive non-functional testing.

7. Can you explain the difference between load testing and stress testing?

Load testing involves evaluating the system's performance under expected workload conditions to ensure it can handle the anticipated number of users. Stress testing, on the other hand, pushes the system beyond its limits to determine its breaking point and assess how it handles extreme conditions.

8. What are the key types of non-functional testing?

The key aspects of non-functional testing include:

  • Performance Testing: Evaluate the system’s speed, responsiveness, and stability in different scenarios
  • Load Testing: Analyze the system’s behavior under normal and extreme load conditions
  • Stress Testing: Calculate the system’s working under extreme and overload conditions
  • Usability Testing: Assesses the application's user-friendliness and intuitiveness for end-users.
  • Security Testing: Identifies potential vulnerabilities and ensures the application’s security against threats.
  • Compatibility Testing: Verifies the application’s functionality across various devices, browsers, and operating systems.

Challenge Yourself: Take the Ultimate Quiz!

1. Which CSS property is used to change text color?

Add Your Comment
Login to Post Your Comment
User Avatar
John Doe
This is a sample comment. The design is very clean and easy to use. I love it!
User Avatar
Jane Smith
Great layout! This will work perfectly for my project. Thanks for sharing!
User Avatar
Alice Johnson
I really like this comment section. It's simple and effective.

Related Interviews

What skills do I need before starting the Full Stack Internship?
It is recommended that applicants have a basic understanding of HTML, CSS, and JavaScript. Familiarity with a backend language like Node.js or Python and a database such as MongoDB or SQL will be beneficial, but not required.
Will I receive a certificate upon completion of the internship?
Yes, a certificate of completion will be awarded to all interns who successfully complete the program and meet the requirements.
What kind of projects will I work on during the Full Stack Internship?
Interns will work on real-world projects involving both frontend and backend development. This includes tasks like building user interfaces, developing APIs, and managing databases to give a comprehensive understanding of full stack development.