TCS Android App Developer Interview Questions and Answers

Aptitude questions(seating arrangement,number series),verbal reasoning, Networking,Cloud based questions,and pseudocode

2 coding questions,one will be easy, other will be tough,solving atleast one problem is necessary.

Q1. Read the given sentence
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Q2. Hear and answer the question
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Q1. Tell me about yourself
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Q2. About college project(as I am fresher) ,about internship, difficulties faced and how we solved it
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Q1. Java core concepts like oops, threading and then the android framework related questions
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Q1. Programs based on scenarios
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Q1. Explain MVVM in detail
Ans. 
MVVM is a design pattern that separates UI code from business logic and data handling.
• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View displays the UI and user interactions

• ViewModel acts as a mediator between Model and View

• ViewModel exposes data and commands to the View

• Data binding is used to keep the View and ViewModel in sync

• MVVM promotes testability and maintainability of code
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Q2. Kotlin sealed class, data class, scope functions
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Q3. Core Java basic questions
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Q1. Detail discussion on design patterns
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Q2. Basic kotlin or java programming
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Q1. Details about notice period and salary
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Q1. Data class in kotlin
Ans. 
Data class in Kotlin is used to represent a simple data container with automatically generated methods like equals(), hashCode(), toString(), and copy().
• Data classes are declared using the 'data' keyword before the class keyword.

• Properties of data classes are automatically generated component functions for destructuring declarations.

• Data classes cannot be abstract, open, sealed, or inner.

• Example: data class User(val na
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Q2. Scope functions
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Q3. Explain viewmodel and mvvm
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ViewModel is a class that stores and manages UI-related data in a lifecycle-conscious way. MVVM is an architectural pattern that separates the UI from the business logic.
• ViewModel is part of the Android Architecture Components and is used to store and manage UI-related data in a lifecycle-conscious way.

• ViewModel survives configuration changes such as screen rotations and retains its data.

• MVVM stands for Model-View-View...read more
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Q4. Higher order functions
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Q1. All technical Jetpack concept no DSA questions and asked all theoretical questions
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Q2. What are coroutine, how to secure ur app data, network call in android , ssl pinning, notification's implementation through FCM, android basic questions
Ans. 
Coroutines are a way to perform asynchronous operations in Android, securing app data involves encryption, SSL pinning enhances security, FCM for notifications.
• Coroutines are used for managing asynchronous operations in Android, allowing for efficient and non-blocking code execution.

• Securing app data involves using encryption techniques such as AES to protect sensitive information from unauthorized access.

• SSL pinning i...read more
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Q1. Basic technical knowledge question
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Q2. Android related questions
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Q1. Communication skill
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Q2. Salary regarding questions
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Q1. Lifecycle of the Activity
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The lifecycle of an Activity in Android refers to the series of states an Activity goes through from creation to destruction.
• An Activity goes through states like onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

• Each state has specific methods that can be overridden to perform actions at that state.

• For example, onCreate is called when the Activity is first created, onResume is called when the Activity is bro
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Q2. Push notification
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Q3. About the project mentioned in the resume
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