Northvolt Automation Engineer Interview Questions and Answers

Q1. OOPs concepts and framework implementation
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Q2. Bubble sort program
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Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements, and swaps them if they are in the wrong order.
• Start at the beginning of the array and compare the first two elements. If the first element is greater than the second, swap them.

• Continue comparing adjacent elements and swapping them if necessary until the end of the array is reached.

• Repeat this process for each ...read more
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Q3. Basic questions on selenium
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Q4. Custom assertions in selenium
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Custom assertions in Selenium allow for creating personalized validation checks in test automation scripts.
• Custom assertions can be created by extending the Assert class in Selenium.

• They can be used to validate specific conditions or elements on a web page.

• Custom assertions can improve test readability and maintainability by encapsulating complex validation logic.

• Example: Creating a custom assertion to verify the prese
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Q5. Webdriver questions
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Q1. SDLC , Defect management tool
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Q2. Basic Java and selenium questions
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Q3. Project related questions
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Q4. Introduction of ourselves
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Q5. What I like and dislike about IT
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I like the constant learning and problem-solving in IT, but dislike the long hours and high stress levels.
• Like: Constant learning opportunities

• Like: Problem-solving challenges

• Dislike: Long working hours

• Dislike: High stress levels
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Q1. What is your educational background?
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Counting letters in a word

Q1. What is the difference between throw and throws in Java?
Ans. 
throw is used to throw an exception in Java, while throws is used to declare an exception that a method might throw.
• throw is used to explicitly throw an exception within a method.

• throws is used in the method signature to declare that the method might throw a specific type of exception.

• Example: throw new Exception("An error occurred!");

• Example: public void method() throws IOException {}
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Q2. How will you handle multiple windows in Selenium?
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Handling multiple windows in Selenium can be achieved using window handles.
• Use getWindowHandles() method to get all window handles

• Switch between windows using switchTo().window() method

• Perform actions on each window as needed
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Q3. What is 204 , 400 response code in REST apis?
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204 and 400 are HTTP response codes in REST APIs indicating success and client error, respectively.
• 204 response code indicates that the server has successfully fulfilled the request and there is no content to send in the response.

• 400 response code indicates that the server could not understand the request due to bad syntax or missing required parameters.

• Example: If a client sends a request to update a resource and the ...read more
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Q4. Coding give the count of upper case and lower case letters in a string
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Count the number of upper case and lower case letters in a string using coding.
• Iterate through each character in the string and check if it is upper case or lower case using built-in functions or ASCII values.

• Keep track of the count of upper case and lower case letters separately.

• Return the counts of upper case and lower case letters.
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Practice quantitative aptitude questions by RS Agarwal

Q1. Tell me about yourself
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Q2. Explain the final year project?
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Q1. Basics oops selenium waits exception handling
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