Rolls-Royce Interview Questions and Answers

Implementing a toggle show/hide button in React involves managing state and event handling.

• Use React's useState hook to manage the visibility state.

• Create a button that toggles the state when clicked.

• Conditionally render content based on the visibility state.

• Example: const [isVisible, setIsVisible] = useState(false);

• Button: <button onClick={() => setIsVisible(!isVisible)}>Toggle</button>

• Content: {isVisib...read more

React interceptors are functions that allow you to modify requests or responses before they are handled by your application.

• Interceptors can be used with libraries like Axios to handle HTTP requests.

• They allow you to add headers, log requests, or handle errors globally.

• Example: Adding an authorization token to every request.

• You can set up interceptors in a central place, like a service file, to keep your code organized...read more

Authentication verifies identity; authorization grants access based on permissions.

• Authentication is the process of verifying who a user is.

• Authorization determines what an authenticated user can do.

• Example of authentication: Logging in with a username and password.

• Example of authorization: A user with admin rights can access all data, while a regular user cannot.

• Types of authentication include: Basic, OAuth, JWT, Mult...read more

To resolve C# import issues or undefined classes, check namespaces, references, and spelling errors.

• Verify the namespace: Ensure the class is in the correct namespace and is being referenced properly.

• Check project references: Make sure all necessary assemblies are referenced in the project.

• Inspect spelling: Look for typos in class names or namespaces that could lead to undefined errors.

• Use 'using' directives: Ensure th...read more

Use LINQ to find and print the employee with the highest salary from a list of employees.

• Create a list of employee objects with properties like Name and Salary.

• Use LINQ's OrderByDescending method to sort employees by salary.

• Select the first employee from the sorted list to get the highest salary.

• Example: var highestPaid = employees.OrderByDescending(e => e.Salary).First();

AddScoped and AddSingleton manage service lifetimes in dependency injection, optimizing resource use and performance.

• AddScoped creates a new instance of a service for each request within a scope, ideal for web applications.

• Example: In ASP.NET Core, a database context is often registered as scoped to ensure a single instance per request.

• AddSingleton creates a single instance of a service for the entire application lifet...read more

Detail-oriented Financial Accountant with expertise in financial reporting, analysis, and compliance, dedicated to driving business success.

• Over 5 years of experience in financial accounting and reporting.

• Proficient in using accounting software like QuickBooks and SAP.

• Successfully managed month-end closing processes, ensuring accuracy and timeliness.

• Implemented cost-saving measures that reduced expenses by 15% in one f...read more