Bharti Airtel React Native Developer Interview Questions and Answers

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Q1. Programming - print the first and last letter of words from a list alternatively
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Print the first and last letter of words from a list alternatively
• Iterate through the list of words

• For each word, print the first and last letter alternatively
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Q2. What is oop and oops concepts
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OOP stands for Object-Oriented Programming. OOPs concepts are the principles of OOP such as inheritance, encapsulation, polymorphism, and abstraction.
• OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOPs concepts include inheritance, where a class can inherit properties and behavior from another class.

• Encapsulation is the bund...read more
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Q1. Basic data structure questions
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Q2. Explain binary search with example
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Binary search is a search algorithm that finds the position of a target value within a sorted array.
• Divide the array into two halves and compare the target value with the middle element.

• If the target value is less than the middle element, search the left half. If greater, search the right half.

• Repeat the process until the target value is found or the subarray is empty.
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Q1. What is concurrency technique in android
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Concurrency technique in Android allows multiple tasks to run simultaneously, improving performance and responsiveness.
• Concurrency in Android can be achieved using AsyncTask, Handlers, Executors, and RxJava.

• AsyncTask allows running background tasks on a separate thread and updating UI on the main thread.

• Handlers are used to post and process Runnable objects on a thread's message queue.

• Executors provide a high-level API...read more
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Q1. Explain about previous project and what was your role in that project
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Mid level coding test

Q1. DSA question like array linked list
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Q1. What are types of Dispatchers
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Types of Dispatchers in Android include Main, IO, Default, and Unconfined.
• Main Dispatcher: Handles UI-related tasks and runs on the main thread.

• IO Dispatcher: Handles IO-related tasks such as network or disk operations.

• Default Dispatcher: Used for CPU-intensive tasks that don't block the main thread.

• Unconfined Dispatcher: Executes the coroutine in the caller thread until the first suspension point.
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Q2. Differences between MVVM and MVC
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MVVM focuses on separation of concerns, with ViewModel acting as a mediator between Model and View. MVC has tighter coupling between Model, View, and Controller.
• MVVM separates concerns by introducing a ViewModel layer to handle presentation logic.

• MVC has a tighter coupling between Model, View, and Controller, leading to potential code duplication and difficulty in testing.

• In MVVM, the ViewModel exposes data and actions...read more
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Q1. Basic,Mvvm,corutiens,Dragger,Room etc
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Q2. Basic to advance question
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Q3. Basic to advance question
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Q1. Some program and degin and make fully funtional login page using Mvvm dragger retrofit rtc
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Q1. Salary discussion only
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Good level mcqs on iOS including both swift and ObjC. One needs a good command in swift for the first written round

Q1. Technical questions were asked based on Android SDK and its lifecycle.
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Q1. Architecture-level questions were asked here and collections related questions.
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