Airtel Payments Bank Interview Questions and Answers

Authentication is the process of verifying the identity of a user, while authorization is the process of determining what resources a user can access.

• Authentication confirms the identity of a user through credentials like username and password.

• Authorization determines the level of access a user has to resources based on their authenticated identity.

• Examples of authentication include login forms, biometric scans, and two-factor authentication.

• Examples of authorization include ...read more

Office politics can impact team dynamics and productivity, but it's important to navigate them professionally.

• Acknowledge the existence of office politics but avoid getting involved in negative behaviors.

• Focus on building positive relationships with colleagues based on trust and respect.

• Communicate openly and transparently to avoid misunderstandings and conflicts.

• Seek guidance from mentors or HR if you encounter challenging situations.

• Stay professional and prioritize the team...read more

Promises are objects representing the eventual completion or failure of an asynchronous operation.

• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() method to handle success and failure.

• They help in avoiding callback hell and writing cleaner asynchronous code.

To release an app on Play Store, you need to create a developer account, prepare the app for release, and submit it for review.

• Create a Google Play Developer account

• Prepare the app for release by ensuring it meets all the requirements and guidelines

• Generate a signed APK file

• Create a store listing with app details, screenshots, and promotional material

• Submit the app for review and wait for approval

• Once approved, publish the app on the Play Store

Scope refers to the visibility and accessibility of variables in a program.

• Scope determines where in a program a variable can be accessed.

• Global scope refers to variables that can be accessed anywhere in the program.

• Local scope refers to variables that are only accessible within a specific block of code.

• Variables declared within a function have local scope.

• Scope can help prevent naming conflicts and improve code organization.

A promise is an object representing the eventual completion or failure of an asynchronous operation.

• Promises are used in JavaScript to handle asynchronous operations.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained together using .then() method.

• Example: Fetching data from an API returns a promise that resolves with the data.

• Example: Promises help avoid callback hell by providing a more structured way to handle asynchronous code.

Reconciliation in React is the process of updating the virtual DOM to match the actual DOM.

• Reconciliation is the process of comparing the virtual DOM with the actual DOM and making necessary updates.

• React uses a diffing algorithm to efficiently update the DOM without re-rendering everything.

• Key prop is important for React to identify which items have changed, added, or removed during reconciliation.