What is Selenium Grid and when do we go for it?

Selenium Grid is a smart proxy server that makes it easy to run tests in parallel on multiple machines. This is done by routing commands to remote web browser instances, where one server acts as the hub. This hub routes test commands that are in JSON format to multiple registered Grid nodes.

How is Selenium Grid implemented?

Guide to install and setup a Grid

1. Step 1: Install Java and Configure Environmental Variables. To use Selenium Grid, you need to install a Selenium server which comes in the form of Jar files.
2. Step 2: Download and Install Selenium Server.
3. Step 3: Configure the Hub Machine.
4. Step 4: Configure Selenium Grid Node.

Can we use selenium grid for performance testing?

Using a selenium grid for performance testing gives you the advantage of being able to easily and quickly implement performance tests into your continuous testing environment re-purposing familiar selenium tests as performance tests.

What are the important topics in selenium?

Topics Include:

• Selenium Webdriver 3. x.
• Java Concepts in details.
• TestNG Framework.
• Advanced Reporting.
• Logging infrastructure with Log4j.
• Page Object Model.
• Page Factory Framework.
• Data Driven Framework.

What is hub and node in selenium grid?

Summary. Selenium Grid is used to run multiple tests simultaneously on different browsers and platforms. Grid uses the hub-node concept. The hub is the central point wherein you load your tests. Nodes are the Selenium instances that will execute the tests that you loaded on the hub.

What is drag and drop in selenium?

What is Drag and Drop in Selenium? This action is performed using a mouse when a user moves (drags) a web element from one location and then places (drops) it at another point. This is a common action used in Windows Explorer when moving a file from one folder to another.

What is the default timeout for Selenium Grid?

-timeout 30 (300 is default) The timeout in seconds before the hub automatically releases a node that hasn’t received any requests for more than the specified number of seconds. After this time, the node will be released for another test in the queue. This helps to clear client crashes without manual intervention.

Is selectAllOptions () is a valid command?

Q: In webdriver, selectAllOptions() is a valid command.

What is TestNG in Selenium?

TestNG in Selenium is a Java testing framework, inspired by JUnit and NUnit. It overcomes the constraints and disadvantages of JUnit. From simple unit testing to complex integrated testing, it is designed to simplify all our testing requirements such as functional testing, regression, end-to-end testing, and more.

What are the most asked questions in a selenium interview?

The most-asked Selenium interview questions for experienced and freshers are mentioned below: Q1. What is automation testing? Q2. Is Selenium 2.0 different from Selenium 3.0? If so, how? Q3. Mention some of the popular tools used for automation testing. Q4.

What is grid in selenium?

Grid: With the help of Grid you can distribute tests on multiple machines so that test can be run parallel which helps in cutting down the time required for running in browser test suites 2) What is Selenium 2.0? Web Testing tools Selenium RC and WebDriver are consolidated in single tool in Selenium 2.0

What is Selenium WebDriver?

Following is a curated list of top Selenium Webdriver Interview Questions and Answers: 1) What is Selenium and what is composed of? Selenium is a suite of tools for automated web testing. It is composed of Selenium IDE (Integrated Development Environment) : It is a tool for recording and playing back.

How to make a great career in selenium?

Having a good knowledge of different programming languages such as Java, C# also gives one an added advantage. In order to find the right candidate companies ask a diverse range of Selenium interview questions to not only freshers but also to experienced individuals wishing to make a great career in this field.