Top 30 Frequently asked Selenium Interview Questions and Answers

Selenium is a popular automation testing tool frequently used by developers for testing web applications. Mostly, selenium tool is popular for browser-based applications not for API testing or unit testing. Selenium Web Driver is a popular testing tool used by big Companies today. When you wanted to start your career as automation tester, Selenium WebDriver is the common topic usually discussed by a recruiter during the interview. In this article, we will discuss on Selenium WebDriver interview questions and answers to assess your testing knowledge on selenium tool. Why is selenium testing tool just loved by developers and testing professionals? Here are the quick reasons that give a clear explanation why selenium testing tool is just loved by developers and testing professionals:

• This is a free and open source testing tool
• The number of helping communities is large
• Selenium tool perfectly works with a different operating system like Windows, Macintosh, Linux, Unix etc.
• It is compatible with almost all web browsers available as of now.
• You can write code in different programming languages based on your experience like Java, C#, Python, Ruby, PERL etc.
• The tool also gives distributed testing facility for more accurate or precise results.

Selenium Interview Questions

1. What do you mean by automation testing or test automation?
2. Are there any benefits of automation testing over manual testing?
3. Selenium is a single testing tool, then why it is taken as a suite by professionals?
4. What are selenium supporting testing types?
5. Are there any drawbacks of selenium testing tool?
6. What do you understand by the term “Selenese”?
7. How to identify web elements in Selenium?
8. Explain the meaning of XPath in Selenium?
9. How to count a number of elements on a page?
10. Can you name the popular selenium tool used by large industries worldwide?

Selenium Testing Interview Questions

1. Explain about the waiting methods in selenium Web Driver?
2. Where the implicit waiting method and explicit it waiting method can be used in your script?
3. Is there any technique to check either button is enabled on the page or not?
4. Is there any technique to check either particular element is visible on the page or not?
5. Name the different type of drivers available in WebDriver?
6. Name the different type of mobile testing drivers supported in WebDriver?
7. Name the programming languages that are used by Web Driver to write the test cases?
8. Do you know the difference between assert commands and verifying commands in Selenium WebDriver?
9. Explain the difference between"/" and "//"in XPathSelenium Web Driver?
10. Name the different type of annotations used in Selenium WebDriver?

Selenium WebDriver Interview Questions

1. Which selenium technology is useful for distributed data processing?
2. How will you check result of text execution in Selenium IDE?
3. How can you modify test cases in Selenium IDE?
4. Explain the significance of JUnit in Selenium testing tool?
5. How to add meta-data in JUnit selenium testing tool?
6. How will you explain the difference between quit () and close () methods in Selenium?
7. Why was the concept of waiting method introduced in Selenium? Name the type of waits in Selenium?
8. Is there any drawback of implementing implicit waits in Selenium?
9. Why Selenium tools fail sometimes?
10. Name the four parameters that have to be passed in Selenium?

Selenium Interview Questions and Answers

In this article, we will discuss on Selenium testing interview questions and answers, Selenium WebDriver interview questions and answers, Selenium tricky interview questions and answers one by one to assess your testing knowledge on selenium tool.

Selenium Testing Interview Questions and Answers

Q1). What do you mean by automation testing or test automation?

Automation testing automates the manual testing process which facilitates the creation of multiple testing scripts that can be executed repeatedly without any manual intervention.

Q2). Are there any benefits of automation testing over manual testing?

The advantages of automation testing are just the endless. Here we have discussed on some of the major benefits that are usually experienced by testing professionals during the entire process –

• Automation testing is more accurate and less prone to human errors.
• It is faster and budget solution tool
• It helps in testing large modules in the limited time span.
• It allows facility of parallel execution whenever needed.

Q3). Selenium is a single testing tool, then why it is taken as a suite by professionals?

The tools available to work with selenium are specially designed to cater to different testing requirements so it is taken as a testing package not only a single tool.

Q4). What are selenium supporting testing types?

Selenium tool supports two types of testing – Functional testing and Regression testing.

Q5). Are there any drawbacks of selenium testing tool?

The functionality of the selenium testing tool is limited to web applications only. It cannot be used mobile apps or API testing. Further, selenium tool does not provide a facility to test Captcha and barcodes. You must have knowledge of some programming language when working on selenium. For report generation, you have to use third-party tools.

Q6). What do you understand by the term “Selenese”?

Selenese is a popular programming language that is used to write test scripts in Selenium IDE.

Q7). How to identify web elements in Selenium?

To identify web elements in Selenium, you need to work with locators. They are the address identifiers to identify web elements accurately and more precisely. The most popular locators in Selenium include ID, TagName, CSS Selector, DOM, ClassName, LinkTest, Name, XPath and many others.

Read: How to Download and Install Selenium IDE in Firefox?

Q8). Explain the meaning of XPath in Selenium?

Based on the XML path of web elements, XPath is used to locate elements on web page. In other words, it is popular to locate HTML elements on a webpage.

Q9). How to count a number of elements on a page?

To count a number of elements on a page, you first need to locate them and count the final size for the page.

Q10). Can you name the popular selenium tool used by large industries worldwide?

Selenium Web Driver is a popular testing tool used by big Companies today.

Selenium WebDriver Interview Questions and Answers

Q11). Explain about the waiting methods in selenium Web Driver?

The two popular waiting methods in selenium Web Driver are – implicit wait an explicit wait. Implicit waiting method is used when Web Driver is not able to find elements in the document, then it waits for the certain time period for the element to appear in the document.

At the same time, the explicit waiting method is an advanced technique that allows developers to write custom codes whenever required.

Q12). Where the implicit waiting method and explicit it waiting method can be used in your script?

Implicit waiting method is time-consuming but suitable for all types of elements, but the explicit wait time is used for selected elements only.

Q13). Is there any technique to check either button is enabled on the page or not?

For this purpose, you need to use the Enabled() method in your script. The return value of the method would be a Boolean. If the return value is true, then the button will be enabled otherwise it will not.

Q14). Is there any technique to check either particular element is visible on the page or not?

For this purpose, you need to use the is Displayed() method in your script. The return value from the method would be Boolean. If the return value is true then the element will be visualized otherwise it will not.

Q15). Name the different type of drivers available in WebDriver?

These are Chrome, Firefox, Safari, Internet Explorer, iPhone, Android, HTML Unit, and Opera Drivers etc.

Read: What is Selenium Grid? Selenium Grid Tutorials for Beginners

Q16). Name the different type of mobile testing drivers supported in WebDriver?

These are iPhone, Android, and Opera Mobile Drivers etc.

Q17). Name the programming languages that are used by Web Driver to write the test cases?

These are PHP, Python, Ruby, C#, PERL, Java etc.

Q18). Do you know the difference between assert commands and verifying commands in Selenium WebDriver?

Assert command and verify commands both will check the conditions for Booleans values. In case the condition is false then assert command will halt the program but verify command does not halt the program but it takes it to the next phase of execution.

Q19). Explain the difference between"/" and "//"in XPathSelenium Web Driver?

As we have discussed already based on XML path of web elements, XPath is used to locate elements on web page. Like UNIX, Linux, or any other programming language, single slash ("/") represents absolute path while double slash ("//") in XPath represents an arelative path.

Q20). Name the different type of annotations used in Selenium WebDriver?

The popular annotations used in Selenium WebDriver include After, Before, Test, Ignore, AfterClass, BeforeClass, and RunWith etc.

Selenium Tricky Interview Questions and Answers

Q21). Which selenium technology is useful for distributed data processing?

Selenium Grid is a popular technology used for distributed data process that distributes tests on multiple machines in parallel. In other, tests can be executed in parallel on different operating systems, different web browsers at the same time by using single script only. Distributed data processing in Selenium not only reduces overall execution time and feedback is also quick.

Q22). How will you check result of text execution in Selenium IDE?

The result for text execution in selenium IDE is displayed in Log Window.

Q23). How can you modify test cases in Selenium IDE?

Obviously, test cases can be modified in Selenium IDE by table views or by looking up the source code.

Q24). Explain the significance of JUnit in Selenium testing tool?

JUnit is an open source framework introduced by Apache to test Java application.

Read: Learn How To Handle Different Webelements in Selenium

Q25). How to add meta-data in JUnit selenium testing tool?

JUnit Annotations is a special process to add syntactic meta-data to Java code. Some of the popular examples of JUnit annotations include variables, parameters, classes, or methods etc.

Q26). How will you explain the difference between quit () and close () methods in Selenium?

Quit() method ends all the browsers running in Web Driver while close() method ends the current browser only.

Q27). Why was the concept of waiting method introduced in Selenium? Name the type of waits in Selenium?

The waiting methods were specially introduced for AJAX based apps in Selenium WebDriver. The two popular types of waits in Selenium are names as Implicit waits and Explicit waits.

Q28). Is there any drawback of implementing implicit waits in Selenium?

The major drawback of implementing implicit waits in Selenium is exceeded time limits. It slows down the overall performance of test cases.

Q29). Why Selenium tools fail sometimes?

Selenium testing is slow as compared to other automated testing tools. Another major problem in complex ID generation where auto-generated ID can result in test case failure during playback.

Q30). Name the four parameters that have to be passed in Selenium?

These parameters are an aPort number, Host, URL, and Browser etc.

FaceBook Twitter Google+ LinkedIn Pinterest Email