ServiceNow QA Engineer Interview Questions and Answers

Find and print the missing number in a given array of strings.

• Convert the array of strings to an array of integers for easier manipulation.

• Iterate through the array to find the missing number by comparing consecutive elements.

• Print the missing number once found.

Reverse a string in an array of strings

• Iterate through each string in the array

• Use a loop to reverse each string character by character

• Store the reversed strings in a new array

To test a faulty ATM, simulate various scenarios like card reader failure, cash dispenser malfunction, network connectivity issues, etc.

• Simulate card reader failure by inserting a damaged card or a card with a magnetic strip issue.

• Test cash dispenser malfunction by requesting cash withdrawal and observing if the correct amount is dispensed.

• Check for network connectivity issues by trying to access online banking service...read more

Path parameter is a part of the URL that comes after the endpoint and is used to identify a specific resource.

• Path parameters are used to pass data to the API endpoint in the URL

• They are specified within curly braces {} in the URL path

• Path parameters are used to identify a specific resource or entity

• Example: /api/users/{userId} where userId is a path parameter

Oops concepts in C# include inheritance, polymorphism, encapsulation, and abstraction.

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

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only exposes necessary functionality.

• Abstraction focuses on the essential characteristics of an object while hiding irrele

Validate input by checking for specific error messages instead of success message

• Check for error messages related to incorrect input (e.g. 'Invalid username/password')

• Verify the response code or status returned after login attempt

• Look for any specific patterns in the error messages that indicate incorrect input

Object-oriented programming concepts used in framework design

• Inheritance: Allows classes to inherit attributes and methods from other classes

• Encapsulation: Bundling data and methods that operate on the data into a single unit

• Polymorphism: Ability to present the same interface for different data types

• Abstraction: Hiding the complex implementation details and showing only the necessary features

To select a dropdown in Selenium, use the Select class and its methods like selectByVisibleText, selectByValue, or selectByIndex.

• Use the Select class from org.openqa.selenium.support.ui package

• Identify the dropdown element using findElement method

• Create a new Select object by passing the dropdown element as a parameter

• Use selectByVisibleText, selectByValue, or selectByIndex methods to choose an option

findelement is used to locate a single element on a webpage, while findelements is used to locate multiple elements on a webpage.

• findelement returns the first matching element found on the webpage

• findelements returns a list of all matching elements found on the webpage

• findelement is used when only one element needs to be located, like a unique identifier

• findelements is used when multiple elements need to be located, li

The main method in Java can be overloaded but not overridden.

• Main method can be overloaded by defining multiple main methods with different parameters.

• Overloading allows multiple methods with the same name but different parameters.

• Main method cannot be overridden because it is a static method and static methods cannot be overridden.