Comcast India Engineering Center Quality Assurance and Automation Engineer Interview Questions and Answers

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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In this first round it was of 45mins which included MCQ question and 1 coding question.

Q1. 1.Difference Between Const,Var,Char. 2.Oop's concept with example 3.JavaScript is async or sync language and explain the reason. 4.How to create a simple object in JavaScript. 5.Find element and Find Eleme...read more
Ans. 
Answers to common interview questions for Automation Test Engineer position.
• Const is used for constant values that cannot be reassigned, var is used for variable declaration, and char is a data type for storing characters in programming languages.

• OOPs concepts include inheritance, encapsulation, polymorphism, and abstraction. Example: Inheritance allows a class to inherit properties and methods from another class.

• JavaS...read more
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Q2. What is Type coercion?
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Type coercion is the process of converting one data type to another in programming.
• Type coercion can happen implicitly or explicitly in programming languages.

• Implicit type coercion occurs when the language automatically converts data types during operations.

• Explicit type coercion occurs when the programmer manually converts data types using functions or operators.

• Example: In JavaScript, the addition operator (+) can pe...read more
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Q3. What is Inheritance? Polymorphism?
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Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class. Polymorphism allows objects of different classes to be treated as objects of a common superclass.
• Inheritance allows for code reusability by defining a new class based on an existing class.

• Polymorphism enables flexibility in programming by allowing objects to be treated as instances of their pare...read more
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Q4. API Error code with explaination?
Ans. 
API error codes are unique identifiers used to indicate specific errors in an API response.
• API error codes are typically numeric or alphanumeric codes that correspond to specific errors in the API.

• Each error code should have a corresponding explanation in the API documentation to help developers understand the issue.

• Examples of API error codes include 400 Bad Request, 401 Unauthorized, and 404 Not Found.
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Q1. Introduce Yourself? Why should we hire you? What is your relevant experience? Tell me about yourself? What are your salary expectations?
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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. Explain the challenges faced in Test Automation
Ans. 
Challenges in Test Automation include dynamic UI elements, maintenance of scripts, data management, and flakiness.
• Dynamic UI elements can cause scripts to fail if not handled properly

• Maintenance of scripts can be time-consuming as applications evolve

• Data management is crucial for test data setup and cleanup

• Flakiness of tests can lead to false positives or negatives
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Q2. What are the top 3 defects that you have raised in your previous project or role.
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CSE core concepts and basic aptitude, few code snippet analysis

Q1. About selenium codes
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Q2. Rest assured framework
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Kind of to explain selenium framework in detail.

Q1. Problem solving coding questions
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Q2. Selenium questions and logical thinking questions
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Q1. General discussion about role
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Q2. Culture fit round
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Q1. General hr questions
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Q2. General hr questions again
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Coding test on hackerrank. Solve 30 day code challange on haackerrank and you will be able to clear it.

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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