Comcast India Engineering Center Automation Engineer Interview Questions and Answers

Q1. Sort the list of a given array of strings
Ans. 
Sort a given array of strings
• Use built-in sorting functions in programming languages

• Implement sorting algorithms like bubble sort, merge sort, etc.

• Consider case sensitivity and special characters
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Q2. Maximum number of repeating characters in a string
Ans. 
The maximum number of repeating characters in a string needs to be determined.
• Iterate through each character in the string and keep track of the count of consecutive repeating characters.

• Update the maximum count whenever a new maximum is found.

• Return the maximum count at the end of the iteration.
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Q3. Type script and java script arrow function loops if else condition
Ans. 
Explaining type script and java script arrow function loops with if else condition.
• TypeScript and JavaScript both support arrow functions for concise syntax.

• Arrow functions can be used in loops to simplify code.

• If-else conditions can be used with arrow functions to add logic.

• Example: const numbers = [1, 2, 3]; numbers.forEach(num => {if(num % 2 === 0) {console.log(num + ' is even');} else {console.log(num + ' is odd');
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Q4. Parallel browser testing, test ng, oops concept
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Q5. Scaled agile framework related questions
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Q6. Selenium and cypress difference ? How to choose best tool
Ans. 
Selenium is widely used for web automation while Cypress is a newer tool with better performance and debugging capabilities.
• Selenium supports multiple programming languages while Cypress only supports JavaScript.

• Cypress has a built-in test runner and debugger while Selenium requires third-party tools.

• Selenium is better for cross-browser testing while Cypress is better for end-to-end testing.

• Choose Selenium for larger a...read more
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Q7. Comparator and comparable difference?
Ans. 
Comparator and Comparable are interfaces used for sorting objects in Java.
• Comparator interface is used to sort objects based on custom criteria.

• Comparable interface is used to sort objects based on their natural order.

• Comparator interface has two methods: compare() and equals().

• Comparable interface has one method: compareTo().
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Q8. Fail-safe and fail-fast iterator?
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Q1. Software Testing
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Q2. Application based QA questions
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Q1. Software testing, QA and Resume based questions
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Q2. Automation and programming related questions
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Q1. Mainly related to JAVA programming
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Q2. Selenium project reviews
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Q1. Reverse the string
Ans. 
Reverse a given string
• Create a new empty string to store the reversed string

• Iterate through the original string from end to start and append each character to the new string

• Return the reversed string
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Q2. Scenario based questions
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Q1. Write Java code to find square root without Math.sqrt()
Ans. 
Use Newton's method to find square root without Math.sqrt() in Java.
• Initialize a variable to store the guess value of square root

• Iterate until the difference between the guess and actual square root is within a desired threshold

• Update the guess value using the formula: guess = (guess + number/guess) / 2
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Q2. Write Java code to add digits of a number until the sum is a single digit
Ans. 
Java code to add digits of a number until the sum is a single digit
• Create a function that takes an integer as input

• Use a while loop to keep adding the digits until the sum is a single digit

• Convert the number to a string to easily access individual digits
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Q3. Write a Java code to print a particular pattern
Ans. 
Java code to print a particular pattern using loops
• Use nested loops to iterate through rows and columns

• Print specific characters based on the row and column index

• Example: Printing a pyramid pattern
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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?
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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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Q1. They mostly asked about Java questions and few scenarios to write test cases.
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Q2. Most of the questions are java questions
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