DE Shaw QA Tester Interview Questions and Answers

General topics like Artificial Intelligence positive or negative impacts

Q1. Everything from resume
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Q1. General questions
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It's very simple and it's a fresher level interview

Java code and some SQL query

Q1. It's a general discussion
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Q1. Oops Concepts of Java
Ans. 
Oops Concepts of Java are fundamental principles of object-oriented programming.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon.

• Abstraction: Hiding the implementation details and showing only the necessary fe
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Q2. How to validate that the URL loaded is correct or not?
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To validate the correct URL loaded, check the current URL in the browser.
• Get the current URL from the browser using driver.getCurrentUrl() method in Selenium.

• Compare the current URL with the expected URL to validate correctness.

• Use assertions or conditional statements to confirm if the URL is correct.

• Consider handling any redirects or dynamic URLs that may affect validation.

• Utilize regular expressions for more flexible
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Q3. Alert handling in selenium
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Alert handling in Selenium involves handling pop-up alerts, confirmation alerts, and prompt alerts.
• Use driver.switchTo().alert() method to handle alerts

• To accept an alert, use alert.accept() method

• To dismiss an alert, use alert.dismiss() method

• To get text from an alert, use alert.getText() method

• To send text to a prompt alert, use alert.sendKeys() method
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Q4. How to perform Mouse actions
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Mouse actions can be performed using Selenium WebDriver by using Actions class
• Create an instance of Actions class

• Use methods like moveToElement, click, doubleClick, contextClick, dragAndDrop, etc.

• Perform the desired action by calling the respective method on the Actions object
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Q5. How to read data from an XL file using selenium
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You can read data from an Excel file using Apache POI library in Selenium.
• Use Apache POI library to interact with Excel files

• Create a FileInputStream object to read the Excel file

• Create a Workbook object to represent the Excel file

• Get the desired sheet from the Workbook

• Iterate through rows and cells to read data
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Q6. Waits in selenium
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Waits in Selenium are used to make the automation script wait for a certain condition to be met before proceeding.
• Implicit Wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit Wait: Waits for a certain condition to be met before proceeding.

• Fluent Wait: Waits for a condition with a defined maximum amount of time.

• Thread.sleep(): Pauses the execution for a specified amount of time.
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Pattern program, array segregation prograk

Q1. Selenium wait, oops concept
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Q2. Collection in java

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Collection in Java is a framework that provides an architecture to store and manipulate a group of objects.

• Collections are used to store, retrieve, manipulate, and communicate aggregate data.

• Common collection types include List, Set, Map, and Queue.

• Example: List names = new ArrayList<>(); names.add("Alice"); names.add("Bob");

• Example: Set numbers = new HashSet<>(); numbers.add(1); numbers.add(2);

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