20+ Multi Wing Interview Questions and Answers

Priority is the importance of fixing a bug, severity is the impact of the bug on the system.

• High priority, low severity: Spelling mistake in a button label

• Low priority, high severity: Critical security vulnerability

• APIs tested: RESTful, SOAP, GraphQL

• GET: Retrieve data, POST: Create data, PUT: Update data

REST and SOAP APIs are two different types of web service protocols. @Before and @BeforeMethod are annotations used in TestNG for setup tasks.

• REST API is lightweight and uses standard HTTP methods like GET, POST, PUT, DELETE. SOAP API is more rigid and uses XML for communication.

• @Before annotation is used in TestNG to run setup tasks before each test method. @BeforeMethod is used to run setup tasks before each test method in a test class.

• Annotations in Java are markers that p...read more

An Enum is a data type that consists of a set of named values.

• Enums are used to define a set of constants that can be used throughout the code.

• Each value in an Enum is assigned an integer value by default, starting from 0.

• Enums can also be assigned specific integer values or even string values.

• Enums can be used in switch statements to handle different cases.

• Example: enum Color { RED, GREEN, BLUE };

• Example: enum Status { SUCCESS = 200, ERROR = 400 };

Find the odd occurring number from an array of numbers, including even occurring numbers.

• Iterate through the array and count the frequency of each number using a hash map.

• Iterate through the hash map and return the number with an odd frequency.

• If no number has an odd frequency, return 'No odd occurring number found.'

The double XOR method is used to find two odd occurring numbers in an array.

• Iterate through the array and perform XOR operation on all elements

• The result will be the XOR of the two odd occurring numbers

• Find the rightmost set bit in the result

• Divide the array into two groups based on whether the corresponding bit is set or not

• Perform XOR on each group separately to find the two odd occurring numbers

The most efficient way to reverse a String of characters is to use StringBuilder's reverse() method.

• Create a StringBuilder object with the given String as parameter

• Call the reverse() method on the StringBuilder object

• Convert the StringBuilder object back to a String using toString() method

App performance should consider factors like code optimization, network efficiency, memory management, and user experience.

• Optimizing code for efficiency and speed

• Minimizing network requests and optimizing data transfer

• Efficient memory management to prevent crashes and slowdowns

• Prioritizing user experience for smooth navigation and responsiveness

Code review involves checking for code quality, functionality, security, and adherence to coding standards.

• Checking for code quality and readability

• Ensuring the code functions as intended

• Identifying and fixing security vulnerabilities

• Verifying adherence to coding standards and best practices

• Providing constructive feedback to the developer