Tata Elxsi Android Developer Interview Questions and Answers

Q1. Android Basics on mvvm architecture
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Q2. Navigation Component
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Q3. Jetpack components- work manager, viewmodel
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Q1. Managerial questions
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Q1. Basic of kotlin questions
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Q2. Live data and life cycle
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Q3. Diff between MVVM and other architectures
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MVVM is a design pattern that separates the UI, business logic, and data layers, promoting better code organization and testability.
• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model.

• MVVM promotes data binding, making it easier to keep the UI in sync with the underlying data.

• Other architectures like MVC (Model-View-Controller) and MVP (Model-View-Presenter) ...read more
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Q1. Android basics and life cycle
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Q2. Services and AIDL
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Q1. Design patterns and use cases
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Q1. Reason foe change current company
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Seeking new challenges and growth opportunities in a more innovative environment.
• Desire for professional growth

• Seeking new challenges

• Looking for a more innovative environment
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Basic interview on question like aptitude, javascript, typescript and react-native question

Q1. Basic javascript question in second round
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Q2. What is function currying
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Function currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying allows you to partially apply a function by fixing a number of arguments, which creates a new function.

• It helps in creating reusable functions and improves code readability.

• Example: const add = (a) => (b) => a + b; const add5 = add
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Q3. What is IIEF where we can use it
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IIFE stands for Immediately Invoked Function Expression, used for creating a function that is executed immediately after it is defined.
• IIFE is used to create a private scope for variables to avoid polluting the global scope.

• It is commonly used in React Native development to encapsulate code and prevent naming conflicts.

• Example: (function() { console.log('IIFE executed'); })();
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Q4. Deeply they ask me closure related question how it's working
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Q5. How call call stack and event loop is working
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Call stack is used to keep track of function calls, while event loop manages asynchronous operations in JavaScript.
• Call stack is a data structure that keeps track of function calls in a program.

• When a function is called, it is added to the top of the call stack. When the function completes, it is removed from the stack.

• Event loop is responsible for managing asynchronous operations in JavaScript, ensuring that they are ...read more
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Q1. Project related discussion only
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Q1. 1. Swift UI and iOS Fundamental and OOPS Concept
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Q2. Combine Framework
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Q3. How to handle Concurrency in swift
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Concurrency in Swift can be handled using Grand Central Dispatch (GCD) and Operation Queues.
• Use GCD to perform tasks concurrently by creating dispatch queues.

• Use Operation Queues to manage and execute multiple operations concurrently.

• Avoid race conditions by using serial queues or synchronization techniques like semaphores or locks.
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Q4. Please explain iOS app distributions methods
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iOS app distribution methods include App Store, Ad Hoc, Enterprise, and TestFlight.
• App Store distribution is for public release and requires Apple's review process.

• Ad Hoc distribution allows sharing apps with a limited number of devices.

• Enterprise distribution is for in-house apps within a company.

• TestFlight is for beta testing with external testers before App Store release.
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Q1. Technical evaluvation
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Q1. Behavioural and salary discussion
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Q1. Explain MVVM and its pros/cons
Ans. 
MVVM is a design pattern that separates the UI, business logic, and data layers in an iOS application.
• Model: Represents the data and business logic of the application.

• View: Represents the UI components of the application.

• ViewModel: Acts as a mediator between the Model and View, handling the presentation logic and data binding.

• Pros: Separation of concerns, easier to maintain and test, promotes reusability.

• Cons: Increase...read more
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Q2. Multithreading in swift
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Multithreading in Swift allows for concurrent execution of tasks to improve performance and responsiveness.
• Use Grand Central Dispatch (GCD) for managing concurrent tasks

• Avoid blocking the main thread to prevent UI freezes

• Consider using Operation and OperationQueue for more complex task management
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Q1. Some basic Questions related to iOS concepts.
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Q2. Multithreading and multitasking.
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Q1. Advanced iOS Questions.
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Q2. API Calling, Json Parsing
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