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10+ IDFC FIRST Bank Interview Questions and Answers

Updated 16 Dec 2024

Q1. Recycling Pens Problem Statement

Imagine you have a certain number of empty pens, and some money in your pocket. For each pen, you can choose to either recycle it for a reward or buy a refill to make it usable ...read more

Ans.

Given empty pens, money, and costs, maximize usable pens by recycling and buying refills.

  • Calculate total money after recycling pens

  • Determine number of refills that can be bought with the money

  • Combine refills with remaining pens to maximize usable pens

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Q2. What is a CDN? How does the browser work?

Ans.

CDN stands for Content Delivery Network. Browser works by sending requests to servers and receiving responses.

  • CDN is a network of servers that deliver content to users based on their geographic location.

  • CDN reduces latency and improves website performance.

  • Browser sends HTTP requests to servers and receives responses containing HTML, CSS, JS, and other assets.

  • Browser renders the received content and displays it to the user.

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Q3. Design VS code(any IDE)

Ans.

Designing an IDE like VS code requires a deep understanding of software development and user experience.

  • Identify the target audience and their needs

  • Choose the programming languages and frameworks to support

  • Create a user-friendly interface with customizable features

  • Implement debugging and testing tools

  • Ensure compatibility with different operating systems

  • Continuously update and improve the IDE based on user feedback

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Q4. What if we want to remove password login mechanism in our product as it is the requirement of the clients.

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Q5. SSR vs Client rendering

Ans.

SSR renders the initial page on the server side while client rendering renders the page on the client side.

  • SSR improves SEO as search engines can crawl the fully rendered page on the server side.

  • Client rendering provides faster initial load times as only data is fetched initially and UI is rendered on the client side.

  • SSR is better for static content websites while client rendering is better for dynamic content websites.

  • Examples: Next.js uses SSR, React.js uses client renderin...read more

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Q6. CREATE A KIP TO TRACK CUSTOMER SATISFACTION

Ans.

Create a KPI to track customer satisfaction.

  • Define the metrics to measure customer satisfaction, such as Net Promoter Score (NPS) or Customer Satisfaction Score (CSAT).

  • Set a target for the KPI based on industry benchmarks or company goals.

  • Collect feedback from customers through surveys, social media, or customer support interactions.

  • Analyze the data to identify trends and areas for improvement.

  • Regularly report on the KPI to stakeholders and take action to improve customer sat...read more

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Q7. High level design of Ecommerce app

Ans.

An Ecommerce app requires a high level design to ensure smooth user experience and efficient functionality.

  • Identify user personas and their needs

  • Design intuitive navigation and search functionality

  • Implement secure payment gateway

  • Integrate with inventory management system

  • Ensure scalability and performance

  • Provide personalized recommendations and promotions

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Q8. Design a side bar with lot of elements

Ans.

Design a side bar with lot of elements

  • Consider using a collapsible menu for better organization

  • Use icons or symbols for each element to save space

  • Implement a search bar for easy navigation

  • Include categories or sections to group similar elements together

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Q9. create API's for calendly app

Ans.

APIs for Calendly app

  • Create endpoints for scheduling, cancelling, and rescheduling appointments

  • Implement authentication and authorization for API access

  • Include error handling and response codes for each endpoint

  • Provide documentation for API usage and parameters

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Q10. Typical AWS and Kubernetes Concepts

Ans.

AWS and Kubernetes are popular cloud computing platforms with key concepts like EC2, S3, EKS, and Pods.

  • AWS: Elastic Compute Cloud (EC2) for scalable virtual servers

  • AWS: Simple Storage Service (S3) for object storage

  • Kubernetes: Elastic Kubernetes Service (EKS) for managing containerized applications

  • Kubernetes: Pods as the smallest deployable units in Kubernetes

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Q11. Design 2 factor authentication

Ans.

Implementing 2 factor authentication for enhanced security

  • Require users to enter their password as the first factor

  • Send a unique code to the user's registered email or phone as the second factor

  • Prompt the user to enter the code to complete the authentication process

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