Falabella Interview Questions and Answers

Hackerrank coding test, depending on domain. Around 15 MCQ and two coding questions.

Q1. What is activity vs fragment
Ans. 
Activity is a single screen with a user interface, while Fragment is a modular section of an activity.
• Activity represents a single screen with a user interface.

• Fragment is a modular section of an activity that can be combined with other fragments to create a multi-pane UI.

• Activities are used to handle user interactions and manage the lifecycle of an app.

• Fragments are reusable components that can be added or removed fro...read more
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Q2. What are coroutines, how do they work internally
Ans. 
Coroutines are a concurrency design pattern in Kotlin that allow for asynchronous programming.
• Coroutines are lightweight threads that can be used to perform non-blocking operations.

• They are based on the concept of suspending functions, which can be paused and resumed.

• Coroutines use a dispatcher to determine which thread or thread pool to run on.

• They can be used to simplify asynchronous code and avoid callback hell.

• Coro...read more
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Q3. What is suspend function
Ans. 
A suspend function is a function that can be paused and resumed later without blocking the main thread.
• Suspend functions are used in Kotlin coroutines to perform asynchronous operations.

• They are defined using the 'suspend' keyword.

• Suspend functions can only be called from other suspend functions or from coroutine scopes.

• They can be used to perform network requests, database operations, or any other long-running tasks w...read more
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Q1. RxJava vs coroutines
Ans. 
RxJava is a library for composing asynchronous and event-based programs using observable sequences. Coroutines are a new way of writing asynchronous code in a sequential manner.
• RxJava is based on the Observer pattern and uses operators to transform and combine observable sequences.

• Coroutines are lightweight threads that can be suspended and resumed, allowing for sequential and structured concurrency.

• RxJava is widely us...read more
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Q2. Fragment lifecycle
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Q1. How will you handle prod defects
Ans. 
Prod defects are handled by identifying, prioritizing, and resolving them in a systematic manner.
• Create a process for reporting and tracking defects

• Prioritize defects based on impact and severity

• Assign resources to investigate and fix defects

• Perform root cause analysis to identify the underlying issues

• Implement fixes and thoroughly test them before deploying

• Communicate with stakeholders about the status and resolution ...read more
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Q1. Js concepts & internals, predict the o/p
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Q2. Coding Question based on hashmap
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Q1. Related to Encapsulation in JS
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Q2. Core concepts of JS
Ans. 
Core concepts of JavaScript include variables, data types, functions, objects, and control flow.
• Variables are used to store data values.

• Data types include strings, numbers, booleans, arrays, and objects.

• Functions are blocks of code that can be called and executed.

• Objects are collections of key-value pairs.

• Control flow includes if statements, loops, and switch statements.
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It was mix up of technical and cognitive questions

Q1. Questions on java 8, Spring Boot, Microservices, Restful Webservices, With 2 coding questions.
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Q1. Technical round 2 had questions regarding project, coding to be written for problem statement, garbage collection, exception. It was like a positive discussion than an interview.
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Q1. Salary discussion. Got offer letter within 2 working day.
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Q1. Basic HR questions
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Q1. Tech question mostly related to projects
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