10+ Velocity Services Interview Questions and Answers

A headless browser is a web browser without a graphical user interface that can be controlled programmatically.

• Headless browsers are used for automated testing and web scraping.

• Selenium can be used with headless browsers like Chrome, Firefox, and PhantomJS.

• Headless browsers are faster and consume less memory than traditional browsers.

• They are also useful for running tests in a continuous integration environment.

• Examples of headless browsers include Chrome Headless, Firefox He...read more

Path parameters and query parameters are used in URLs to pass information to a web server.

• Path parameters are part of the URL path and are used to identify a specific resource.

• Query parameters are added to the end of the URL and are used to filter or sort the results.

• Path parameters are defined with a colon (:) in the URL, while query parameters are defined with a question mark (?) and an ampersand (&) to separate multiple parameters.

• Example of path parameter: /users/:id wher...read more

To remove duplicate elements from an array, we can use a Set or loop through the array and compare each element.

• Create a new Set from the array to remove duplicates

• Loop through the array and compare each element to a new array without duplicates

• Use filter() method to create a new array without duplicates

StaleElementReferenceException occurs when an element is no longer attached to the DOM. It can be handled using explicit wait.

• Use explicit wait to wait for the element to be present and clickable before performing any action on it

• Use try-catch block to catch the StaleElementReferenceException and retry the action

• Use Page Object Model to avoid StaleElementReferenceException by initializing the elements again

• Use JavaScriptExecutor to refresh the page and then try to interact wi...read more

Defect life cycle is the process of identifying, reporting, prioritizing, fixing, and verifying defects in software.

• Defect is identified by testers during testing

• Defect is reported to development team

• Development team prioritizes and fixes the defect

• Fixed defect is verified by testers

• If defect is not fixed, it goes back to development team

• If defect is fixed, it is closed

Java program to detect broken links in a browser

• Use Selenium WebDriver to navigate to the webpage

• Find all the links on the page using findElements() method

• Iterate through each link and check if it returns a 404 error

• Use HttpURLConnection class to check the response code of each link

To update a query in SQL, use the UPDATE statement with the SET clause and WHERE clause.

• Use the UPDATE statement followed by the name of the table to be updated

• Use the SET clause to specify the new values for the columns

• Use the WHERE clause to specify which rows to update

• Example: UPDATE employees SET salary = 50000 WHERE department = 'IT'

POST method is used to submit data to be processed to a specified resource.

• POST method is one of the HTTP methods used to send data to a server to create or update a resource.

• It is commonly used in web forms to submit data to a server.

• The data sent using POST method is not visible in the URL.

• It is more secure than GET method as sensitive data can be sent in the request body.

• Example: Submitting a login form to authenticate a user.

Explicit wait is a wait condition defined by the tester, while implicit wait is a default wait condition set by the driver.

• Explicit wait is used to wait for a specific condition to occur before proceeding with the test

• Implicit wait is used to wait for a certain amount of time before throwing an exception

• Explicit wait is defined using WebDriverWait class in Selenium

• Implicit wait is set using the driver.manage().timeouts().implicitlyWait() method

• Example: Explicit wait can be us...read more