Cognizant Mobile App Developer Interview Questions and Answers

There is aptitude test

Yeah some times there is taff questions too

Q1. I can't share quotation
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Q2. No I can't share here
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Q1. Android Activity LifeCycel
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Q2. Android Fragment Life Cycle. The interviewer asked me which life cycle methods get triggered in different scenarios.
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Q3. Higher Order and Lambda Functions in Kotlin
Ans. 
Higher Order and Lambda Functions in Kotlin
• Higher order functions are functions that take other functions as parameters or return functions

• Lambda functions are anonymous functions that can be used as arguments or return values in higher order functions

• They provide a concise way to write code and enable functional programming in Kotlin
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Q4. Kotlin OOPS concepts - Classes, Objects inheritance, Polymorphism, Encapsulation, Abstraction, Interfaces, Visibility Modifiers, Companion Object, Object Expression, Object Declaration
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Q5. Intents, Intent Filter, Broadcast Recievers, Push Notifications
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Q6. Unit Testing and UI Testing
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Q7. Multi Modular Project structure
Ans. 
Multi Modular Project structure is an architectural approach that divides an application into multiple modules for better organization and scalability.
• Divide the application into separate modules based on functionality or features.

• Each module should have its own set of code, resources, and dependencies.

• Modules can communicate with each other through defined interfaces or APIs.

• Modularization helps in code reusability, e...read more
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Q8. MVVM architecture, VM advantages, Livedata
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Q9. Multi Threading, Coroutines
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Q10. Dependency Injection
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Q11. Showed me Some Kotlin codes and ask me to explain those codes and tell the output
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Q12. Null Pointer Prevention and Type safety in kotlin
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Null pointer prevention and type safety in Kotlin
• Kotlin uses nullable and non-nullable types to prevent null pointer exceptions

• The safe call operator '?' can be used to safely access nullable variables

• The '!!' operator can be used to explicitly throw a null pointer exception

• Kotlin's type system ensures type safety by checking types at compile-time
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Q13. Scope functions
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Q1. Just basic details like current salary, expectation, Notice Period, Location Preferences
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Q1. This was basically salary negotiation round
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Q1. Tell me about yourself.
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Q1. What is AnyObject, Observer, coding round
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By Tcs hiring process

Some dsa questions
Like based on kadane algorithm
And some implementations based questions

Q1. Tell me about yourself?
Ans. 
I am a passionate Android developer with 5 years of experience in building innovative mobile applications.
• 5 years of experience in Android app development

• Strong knowledge of Java and Kotlin programming languages

• Experience with RESTful APIs and third-party libraries

• Designed and implemented user-friendly interfaces

• Published multiple apps on Google Play Store
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Q2. What is meant by pricing procedure?
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Pricing procedure refers to the process of determining the price of a product or service based on various factors.
• Pricing procedure involves analyzing costs, competition, target market, and value proposition.

• It helps in setting a price that maximizes profits while remaining competitive in the market.

• Different pricing strategies such as cost-plus pricing, value-based pricing, and competitive pricing can be part of a pri...read more
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