10+ Qe Automation Engineer Interview Questions and Answers

Implicit wait is set globally for all elements, while explicit wait is applied only to specific elements.

• Implicit wait is set once at the beginning of the test script, while explicit wait is used whenever needed.

• Implicit wait waits for a specified amount of time before throwing a NoSuchElementException, while explicit wait waits for a certain condition to be met before proceeding.

• Implicit wait is defined using driver.manage().timeouts().implicitlyWait() method, while explicit...read more

Selenium is a popular open-source automation testing tool used for web applications.

• Selenium has four components: Selenium IDE, Selenium RC, WebDriver, and Selenium Grid.

• Selenium IDE is a record and playback tool used for creating test cases.

• Selenium RC is a deprecated tool that allows executing test scripts in multiple browsers.

• WebDriver is a tool used for automating web applications and supports multiple programming languages.

• Selenium Grid is used for running tests in paral...read more

Java is a high-level programming language used for developing applications and software.

• Java is an object-oriented language

• It is platform-independent

• Java code is compiled into bytecode

• The bytecode is executed by the Java Virtual Machine (JVM)

• JVM converts bytecode into machine code

• Java programs are executed in a sandbox environment for security

• Java has automatic memory management

Common tools and frameworks used in QE Automation include Selenium, Appium, JUnit, TestNG, Cucumber, and Jenkins.

• Selenium - widely used for web application testing

• Appium - used for mobile application testing

• JUnit and TestNG - popular Java testing frameworks

• Cucumber - for behavior-driven development

• Jenkins - for continuous integration and continuous delivery

WebDriver methods are essential for automating web applications, enabling interaction with web elements.

• get(String url): Loads a new web page in the current browser window. Example: driver.get('https://www.example.com');

• findElement(By by): Finds the first web element matching the given locator. Example: driver.findElement(By.id('username'));

• click(): Clicks on the web element. Example: driver.findElement(By.id('submit')).click();

• sendKeys(CharSequence... keysToSend): Sends keys...read more

REST APIs enable communication between client and server using standard HTTP methods for data exchange.

• REST stands for Representational State Transfer, a software architectural style.

• Uses standard HTTP methods: GET (retrieve), POST (create), PUT (update), DELETE (remove).

• Resources are identified by URIs (Uniform Resource Identifiers).

• Data is typically exchanged in JSON or XML format.

• Stateless operations: each request from client to server must contain all information needed t...read more

SDLC is a process followed for software development while STLC is a process followed for software testing.

• SDLC stands for Software Development Life Cycle

• It includes phases like planning, designing, coding, testing, and maintenance

• STLC stands for Software Testing Life Cycle

• It includes phases like test planning, test design, test execution, and test closure

• Both SDLC and STLC are important for delivering quality software products

Github is a web-based platform for version control and collaboration.

• Github allows developers to store and manage their code repositories online.

• It provides features like version control, issue tracking, and pull requests.

• Github also allows for collaboration between developers through features like forking and merging.

• It supports various programming languages and integrates with many development tools.

• Github is widely used in the software development industry and has a large ...read more

OOP concepts include encapsulation, inheritance, polymorphism, and abstraction, forming the foundation of object-oriented programming.

• Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: A class 'Car' with attributes like 'color' and methods like 'drive()'.

• Inheritance: Mechanism where a new class inherits properties and behavior from an existing class. Example: 'ElectricCar' inherits from 'Car'.

• Polymorphism: Ability to present th...read more

The project uses a hybrid framework combining data-driven and keyword-driven approaches.

• Combines data-driven and keyword-driven testing

• Utilizes reusable components for test automation

• Supports both functional and regression testing