Rj Events Interview Questions and Answers

Bug life cycle is the process of identifying, reporting, fixing, retesting, and closing bugs in a software project.

• Bug is identified by a tester during testing phase

• Bug is reported to the development team

• Development team fixes the bug

• Tester retests the bug to ensure it is fixed

• Bug is closed once confirmed fixed

Iterator and generator are used in Python to iterate over a sequence of elements. .pyc files are compiled Python files.

• Iterator in Python is an object that enables a programmer to traverse a container, like a list.

• Generator in Python is a function that returns an iterator. It generates values using the yield keyword.

• Example of iterator: for num in range(5): print(num)

• Example of generator: def square_numbers(n): for i in range(n): yield i*i

• .pyc files are compiled Python files ...read more

Java 8 and 11 introduced several new features and improvements to the language.

• Java 8 introduced lambda expressions, functional interfaces, streams, and default methods.

• Java 11 introduced local variable syntax for lambda parameters, HTTP client API, and new string methods.

• Example of Java 8 lambda expression: (x, y) -> x + y

• Example of Java 11 HTTP client API: HttpClient client = HttpClient.newHttpClient();

call, bind, and apply are methods used to manipulate the value of 'this' in JavaScript functions.

• Call invokes a function with a specified 'this' value and arguments provided individually.

• Bind creates a new function that, when called, has its 'this' keyword set to the provided value.

• Apply invokes a function with a specified 'this' value and arguments provided as an array.

• All three methods are used to control the value of 'this' in a function.

• Example: myFunction.call(thisValue,...read more

Angular is a front-end framework, Node.js is a back-end runtime environment, and Express.js is a web application framework for Node.js.

• Angular is used for building dynamic single-page applications (SPAs) with HTML, CSS, and TypeScript.

• Node.js is used for building scalable network applications and is based on the V8 JavaScript engine.

• Express.js is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.

• Ang...read more

Sort an array of strings in descending order

• Use the sort() method with a custom compare function to sort the array in descending order

• Example: ['apple', 'banana', 'cherry'].sort((a, b) => b.localeCompare(a)) will result in ['cherry', 'banana', 'apple']