EPAM Systems Automation Engineer Interview Questions and Answers

We are using the Selenium framework for automation testing in our project.

• Selenium is a popular open-source automation testing framework

• It supports multiple programming languages like Java, Python, C#, etc.

• Selenium WebDriver is used for automating web applications

• It provides features for browser automation, testing across different browsers, and parallel test execution

Framework structure refers to the organization and layout of the automation framework components.

• Framework structure includes modules, libraries, test scripts, configuration files, and test data.

• It follows a hierarchical structure with layers such as driver scripts, reusable libraries, and test cases.

• Frameworks can be structured as linear, modular, data-driven, keyword-driven, or hybrid.

• Example: In a data-driven framew...read more

findelement returns the first matching element on a webpage, findelements returns a list of all matching elements.

• findelement returns a single WebElement, findelements returns a list of WebElements

• findelement throws NoSuchElementException if no element is found, findelements returns an empty list

• Example: driver.findElement(By.id("exampleId")) vs driver.findElements(By.className("exampleClass"))

Handling multiple tabs in Selenium involves switching between tabs and performing actions on each tab.

• Use getWindowHandles() to get a set of window handles

• Switch to a specific tab using switchTo().window(handle)

• Perform actions on the tab

• Close the tab if needed using driver.close()

Hashmaps are data structures that store key-value pairs and allow for efficient retrieval of values based on keys.

• Hashmaps are also known as dictionaries, maps, or associative arrays.

• They use a hash function to map keys to indices in an underlying array.

• Hashmaps offer constant-time average case complexity for insertion, deletion, and lookup operations.

• Example: HashMap map = new HashMap<>(); map.put("ke

Try and catch blocks are used in programming to handle exceptions and prevent the program from crashing.

• Try block is used to enclose the code that might throw an exception

• Catch block is used to handle the exception thrown in the try block

• It prevents the program from crashing and allows for graceful error handling

• Can also include finally block to execute code regardless of whether an exception is thrown

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access the properties and methods of the base class

• Example: Class 'Car' can inherit from class 'Vehicle'