10+ QA Engineer Automation QA.Selenium Interview Questions and Answers

Programs to find second largest in an integer array and denomination to get amount.

• For finding the second largest number, sort the array in descending order and return the second element.

• For finding the denomination, loop through the array of denominations and keep dividing the amount until it becomes zero.

• Use integer division to get the number of notes of each denomination.

Questions related to Java and automation testing

• ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list

• For loop, enhanced for loop, Iterator, ListIterator can be used to iterate through a list

• List is an ordered collection, Set is an unordered collection, Map is a collection of key-value pairs

• Abstract class cannot be instantiated, its implementation is done by extending it and providing implementation for its abstract methods

• Chall...read more

Questions related to TestNG, String and StringBuilder, current project framework details, and POM.

• TestNG is a testing framework for Java

• String is immutable while StringBuilder is mutable

• Current project framework details depend on the project

• POM is a design pattern for creating object repositories

Abstract classes are partially implemented classes while interfaces are fully abstract classes.

• Abstract classes can have both implemented and abstract methods while interfaces can only have abstract methods.

• A class can only inherit from one abstract class but can implement multiple interfaces.

• Abstract classes can have constructors while interfaces cannot.

• Abstract classes can have instance variables while interfaces cannot.

• An abstract class can be used to define a base class f...read more

Answering types of waits, types of exceptions, and oops concepts for QA Engineer Automation QA.Selenium

• Types of waits include implicit, explicit, and fluent waits

• Types of exceptions include checked and unchecked exceptions

• Oops concepts include inheritance, polymorphism, and encapsulation

TakeScreenshot method in Selenium captures a screenshot of the current web page.

• Create an object of the TakesScreenshot interface

• Use the getScreenshotAs() method to capture the screenshot

• Save the screenshot to a file or display it in the console

I have worked on a data-driven framework using Selenium WebDriver with TestNG for automation testing.

• Used Page Object Model design pattern to separate test scripts from page objects

• Implemented data-driven testing using Excel or CSV files to drive test data

• Utilized TestNG annotations for test execution and reporting

• Integrated with Jenkins for continuous integration and execution of test suites

Locators can be identified using xpath and css for web element identification in Selenium automation testing.

• XPath can be used to locate elements based on their XML path in the DOM.

• CSS selectors can be used to locate elements based on their attributes, classes, or IDs.

• XPath is more powerful but slower than CSS selectors.

• Example: XPath - //input[@id='username']

• Example: CSS - input#username

Density is the measure of mass per unit volume of a substance.

• Density is calculated by dividing the mass of an object by its volume.

• It is a physical property that helps identify substances.

• Different substances have different densities.

• Density can be used to determine if an object will float or sink in a fluid.

• Water has a density of 1 gram per cubic centimeter (g/cm³).

There are several locators used in Selenium such as ID, Name, Class Name, Tag Name, Link Text, and Partial Link Text.

• ID - unique identifier for an element

• Name - name attribute of an element

• Class Name - class attribute of an element

• Tag Name - HTML tag name of an element

• Link Text - exact text of a link element

• Partial Link Text - partial text of a link element

Different design techniques for QA automation

• Data-driven testing

• Keyword-driven testing

• Behavior-driven development

• Model-based testing

• Exploratory testing

Selenium components for automation testing

• Selenium WebDriver - main component for browser automation

• Selenium IDE - record and playback tool for creating test cases

• Selenium Grid - distribute tests across multiple machines

• Selenium RC - deprecated component for browser automation

• Selenium Server - used to run Selenium tests on remote machines

Provide 3 small codes for Automation QA using Selenium

• Code to open a browser and navigate to a URL

• Code to locate an element on a webpage and interact with it

• Code to perform a basic assertion on a webpage

Current CTC is confidential. Expected CTC is based on industry standards and my experience.

• Current CTC is confidential information and not typically shared during interviews.

• Expected CTC is based on industry standards, job responsibilities, and my experience.

• I am open to discussing compensation based on the job requirements and market rates.