BetaNXT Senior Business Analyst Interview Questions and Answers

You will get base code from HR and you will be asked to enhance the code with few additional requirements and this will be reviewed in the next One On One discussion.
As part of One On One discussion, you need to explain your thought process and need to add few more enhancements

Q1. This round is mainly on checking your understanding on the projects you have worked on and why the project was implemented in a specific way
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Q1. This was a system design round. You will receive an open ended product requirement. You need to ask questions to refine the requirement and provide the solution
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Q1. This was the Bar Raiser round. Questions were mainly on how you will handle a certain situations in the company
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There was a take home coding test - application to allot a parking lot.

Q1. Questions around optimisations around parking lot application submitted in round1. Implement more use cases asked on the spot System Design/Scaling related questions
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Q1. Mine was java, so Java technical questions, Java new features Questions around Design patterns Questions on SOLID principles
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Q1. Use case was given for wallet(e.g. pay later wallet) and asked to design basic REST APIs. E.g. User have balance in wallet User makes transaction via the wallet User add money in wallet
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Q1. It was 1 hour round. This was round with Engineering Technical Head. The questions were around willingness to work, long term / short term goals, high level behavioural questions, cross questions to evalua...read more
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Q1. This was HR round, around 20 minutes
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Q1. How to build an caching layer for iOS Apps
Ans. 
Building a caching layer for iOS Apps
• Identify the data that needs to be cached

• Choose a caching mechanism (e.g., NSCache, CoreData, SQLite)

• Implement caching logic in the app's data access layer

• Define cache eviction policies to manage memory usage

• Consider using a cache expiration mechanism

• Handle cache invalidation when data changes

• Optimize cache performance by using appropriate data structures
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Q2. How to optimise image rendering for iOS Apps
Ans. 
Optimizing image rendering for iOS Apps involves techniques like image compression, caching, lazy loading, and using the appropriate image formats.
• Use image compression techniques like JPEG or PNG optimization to reduce file size without compromising quality

• Implement caching mechanisms to store and retrieve images locally, reducing network requests

• Utilize lazy loading to load images only when they are needed, improving...read more
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Q3. Tell me about framework types in iOS
Ans. 
There are several types of frameworks in iOS, including system frameworks, third-party frameworks, and custom frameworks.
• System frameworks are provided by Apple and include UIKit, Foundation, and Core Data.

• Third-party frameworks are developed by external developers and can be integrated into iOS apps, such as Alamofire and Firebase.

• Custom frameworks are created by developers for specific project needs and can be reused...read more
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Machine Coding Round

Low level design - ATM design

High level design - Uber

Q1. Director of engineering round
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Q2. Motivation to join the company
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Q3. Previous roles and responsibilities held
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Q1. What is K means
Ans. 
K-means is a popular clustering algorithm used to partition data points into K clusters based on similarity.
• K-means aims to minimize the sum of squared distances between data points and their respective cluster centroids.

• It requires the number of clusters (K) to be specified in advance.

• The algorithm iteratively assigns data points to the nearest cluster centroid and updates the centroids until convergence.

• K-means is se...read more
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Q2. Type 1 and Type 2 error
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One machine coding round, parking lot question

Q1. Question related to parking lot
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Q2. Current project related questions
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Q1. High level design
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Q2. Yet to appear ......
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Q1. Which programming language would you use in which situation?
Ans. 
I would use Python for data analysis, Java for enterprise applications, and JavaScript for web development.
• Python - data analysis, machine learning, scientific computing (e.g. pandas, numpy)

• Java - enterprise applications, backend development (e.g. Spring framework)

• JavaScript - web development, front-end development (e.g. React, Angular)
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Create a service to assign a delivery operator

Q1. Design Uber ride assignment system
Ans. 
Design a system for assigning Uber rides efficiently and fairly
• Use a matching algorithm to pair riders with drivers based on location, availability, and other factors

• Implement a dynamic pricing system to incentivize drivers to accept rides in high-demand areas

• Consider implementing a rating system for both riders and drivers to ensure quality service

• Utilize real-time data and analytics to optimize ride assignments and r
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Q1. Design BookMyShow
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Q1. What qualities do you see in a leader
Ans. 
A leader should possess qualities such as communication skills, empathy, decisiveness, and the ability to inspire and motivate others.
• Communication skills - A leader should be able to effectively communicate with team members, stakeholders, and other leaders.

• Empathy - A good leader should be able to understand and relate to the emotions and experiences of others.

• Decisiveness - Leaders should be able to make tough decis...read more
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