Twelve Most Popular Selenium Interview Questions And Answers

1. What Is Selenium, And What Are Its Advantages?

Selenium is a tool of open-source automated testing that is used to automate web browsers. It allows you to write test scripts in various programming languages such as Java, Python, Ruby, and C#. Selenium has many advantages, such as cross-browser compatibility, language support, easy learning, open-source, and support for multiple operating systems. If you're looking to learn Selenium, many training programs are available, including Selenium Training In Chennai. These programs can provide you with the skills and knowledge you need to use Selenium for web automation testing effectively.


2. What Are The Different Components Of Selenium?

There are four different components of Selenium:


  1. Selenium IDE: It is a record and playback tool that allows users to record their actions in the web browser and generate automated test scripts.

  2. Selenium WebDriver: It is a programming interface that allows users to write test scripts in various programming languages such as C#, Python, ruby, and Java. It provides a library of methods and functions to interact with web elements and automate user actions.

  3. Selenium Grid: This tool allows users to run their test scripts on multiple machines and browsers simultaneously. It provides distributed testing and parallel testing capabilities.

  4. Selenium RC (Remote Control): It is an outdated version of Selenium that has been replaced by Selenium WebDriver. It uses JavaScript to automate user actions in the web browser and requires the Selenium RC server to be running.


3. What Is The Difference Between Selenium IDE And Selenium Webdriver?

The main differences between Selenium IDE and Selenium WebDriver are:


  1. Selenium IDE is a playback and record tool, which means that it can record user actions in a web browser and generate test scripts automatically. Selenium WebDriver, on the other side, is a programming interface that requires users to write test scripts in a programming language of their choice.

  2. Selenium IDE can only be used for testing web applications in Firefox browser, while Selenium WebDriver can be used for testing web applications in multiple browsers such as Chrome, Firefox, Safari, and Internet Explorer.

  3. Selenium IDE has limited capabilities when compared to Selenium WebDriver. WebDriver provides a wide range of APIs and functions that allow users to interact with web elements and perform more complex tasks during the testing process.

  4. Selenium IDE is more suitable for beginners or for creating quick test scripts, while Selenium WebDriver is better suited for more advanced and complex test automation scenarios.


4. What Are The Types Of Locators Used In Selenium Webdriver?

The locators used in Selenium WebDriver are ID, Name, Class Name, Tag Name, Partial Link Text, Link Text, and CSS Selector.


5. What Is The Difference Between Findelement() And Findelements() In Selenium Webdriver?

findElement() is used to find the first element within the web page that matches the specified locator. findElements() is used to see all the details within the web page that matches the specified locator.


6. What Is The Difference Between Absolute Xpath And Relative Xpath?

Absolute XPath begins with a single forward slash (/) and selects the element from the root node. Relative XPath starts with a twice-forward slash (//) and sets the piece from anywhere within the document.


7. What Is TestNG, And What Are Its Advantages?

TestNG is testing Java used to write and test cases. TestNG has many advantages, such as grouping of test cases, parallel execution, test case dependency, and data-driven testing.


8. How Can You Handle Frames In Selenium Webdriver?

You can handle frames in Selenium WebDriver using the switch () method. The switch () process is used to switch to the desired frame using the frame index, frame name, or frame web element.


9. What Is A Web Element In Selenium Webdriver?

A Web Element is an interface in Selenium WebDriver that represents an HTML element on a web page. It provides methods to interact with the web element, such as click(), getText(), sendKeys(), etc.


10. What Is An Implicit Wait And Explicit Wait In Selenium Webdriver?

An implicit wait and an explicit wait are two different types of waits used in Selenium WebDriver to pause the execution of the test script for a specified period of time. The difference between them is as follows:


  1. Implicit Wait: It is a type of wait used to set a default waiting time for the web driver instance to wait for an element to appear in the web page before throwing an exception. This wait is set only once at the beginning of the test script and is applicable to all the elements in the script. If the element is found before the specified time, the script will continue with the next step. The element is not found within the certain time, the script will throw a TimeoutException.

  2. Explicit Wait: It is a type of wait used to pause the execution of the test script until a certain condition is met. This wait is applied only to a specific element in the script and is used when the element takes more time to load or when the element is not immediately visible on the web page. Explicit wait can be applied to any element based on different conditions such as element visibility, element clickable, element selection, etc. If the condition is met within the specified time, the script will continue with the next step. The condition is not meet within the specified time, the script will throw a TimeoutException.


11. What Is A Data Driven Testing In Selenium Webdriver?

Data Driven Testing is a testing technique in Selenium WebDriver that involves testing the same functionality with different sets of data. It allows you to test the functionality of the application with a large number of data sets and helps to identify the issues with the application.


12. What Is A Page Object Model In Selenium Webdriver?

The Page Object Model is a design pattern in Selenium WebDriver that separates the test code from the page code. It represents each web page as a separate class and provides methods to interact with the web elements on that page.

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