Epsilon Lead Engineer Interview Questions and Answers

Q1. What is a View Model in Android? Explain Room DB Steps in Detail? Explain Features of Java 8 ? Write a Code Snippet for Thread ?
Ans. 
A View Model in Android is a class that stores and manages UI-related data in a lifecycle-conscious way.
• View Model helps to separate the UI data from the UI controller logic.

• It survives configuration changes and can be shared between fragments or activities.

• Example: ViewModel class in Android Architecture Components.
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Q2. What is View Model ?
Ans. 
View Model is a design pattern that separates the data presentation logic from the business logic in an application.
• View Model is used to prepare data for display in a user interface.

• It helps in keeping the business logic separate from the UI logic.

• View Model is commonly used in MVVM (Model-View-ViewModel) architecture.

• It can contain data formatting, validation, and other presentation-related logic.
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Q3. Room DB in Android ?
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Room DB is a persistence library that provides an abstraction layer over SQLite to allow for more robust database access in Android applications.
• Room DB simplifies database interactions by providing compile-time verification of SQL queries.

• It consists of three main components: Entity, DAO (Data Access Object), and Database.

• Example: @Entity annotation defines a SQLite table, @Dao annotation defines database operations, ...read more
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Q4. Android Components Framework ?
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Android Components Framework is a set of building blocks that help developers create Android apps.
• Includes activities, services, broadcast receivers, and content providers

• Activities are UI components, services run in the background, broadcast receivers respond to system-wide broadcast announcements, content providers manage shared set of app data

• Components can be declared in the AndroidManifest.xml file
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Q1. 1) Explain AIDL, HIDL ? 2) Android Boot Up Sequence? 3) Android Architecture in detail? 4) Android Components Framework? 5) Android Activity Lifecycle?
Ans. 
AIDL and HIDL are communication interfaces used in Android development. Android Boot Up Sequence, Architecture, Components Framework, and Activity Lifecycle are key concepts in Android development.
• AIDL (Android Interface Definition Language) is used for inter-process communication in Android. It allows different applications to communicate with each other.

• HIDL (Hardware Interface Definition Language) is used for commun...read more
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Q1. Angular Interview questions
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Q1. Placement and Base location related
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Basic apptitude questions like creativity in maths

Computer awareness in real time

Q1. Stress related questions
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Q2. How much salary do you expect?
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Q1. Psychology questions
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Q2. How will you manage both kids and office
Ans. I would take a cab and work in hybrid model
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Question with answer in interview topics

Q1. You tell me about interview process And remember after 6months
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Q1. On c language they asked
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Q1. Personal details they asked
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Q1. Much about negotiation of salary
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Q1. Tell me about a time when you handled conflict in a team
Ans. 
Handled conflict in a team by facilitating open communication and finding a compromise
• Addressed the issue directly with the individuals involved

• Encouraged open and honest communication to understand each person's perspective

• Facilitated a discussion to find a compromise that satisfied all team members
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Q1. Design patterns
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Q2. Advantage of using microservices
Ans. 
Microservices offer scalability, flexibility, and fault isolation in software development.
• Scalability: Microservices allow for independent scaling of different components, making it easier to handle increased load on specific services.

• Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for faster innovation and adaptation to changing requirements.

• Fault isolation: If one micros...read more
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Destined engineer combat.

Maths knowledge basic

I liked it very much i never got such a great experience having 1 years just experience.

Q1. What is your qualification
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Q2. What sort of experience you have and how many years.
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Q3. What are your qualities
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Q4. How long will you work in our company
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Q5. What next in your mind. Do you want to compete
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Q6. What are you specialized in?
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Q7. How many years experience you have.
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Q8. What are your character traits.
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Q9. What are you special in?
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Q10. How and from where have you studied
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Q11. Are you fresher or experienced
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Q12. How far will you go in your carreer.
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Q13. What are your hobbies.
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Q14. Expertise a good choice or job.
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Q15. What is 4+4 or What is 4 bytes. Answer same or different.
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Q16. Specialization special, What special do you have.
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Q17. 5+5 or 5*5 which you prefer.
Ans. 
I prefer 5*5 as it is a standard mathematical operation for multiplication.
• Multiplication is a fundamental arithmetic operation.

• 5*5 is more commonly used in mathematical calculations.

• 5+5 is a simple addition operation.
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Q18. What is your and your pets name.
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Q19. Do you lie or are you truthful proof.
Ans. 
I always strive to be truthful and honest in all situations.
• I believe in honesty and integrity in all aspects of my life.

• Being truthful builds trust and credibility with colleagues and clients.

• Lying can lead to negative consequences and damage relationships.

• Example: I always provide accurate status updates on projects, even if it means admitting mistakes or delays.
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Q20. Name some sweets?
Ans. 
Some popular sweets include chocolate, ice cream, cake, cookies, and candy.
• Chocolate

• Ice cream

• Cake

• Cookies

• Candy
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Q21. Good condition or bad condition on what does it depend.
Ans. 
Condition can depend on various factors such as environment, genetics, lifestyle, and medical history.
• Condition can depend on environmental factors like pollution, climate, and access to healthcare.

• Genetics play a role in determining one's predisposition to certain conditions.

• Lifestyle choices such as diet, exercise, and stress management can impact one's overall health.

• Medical history, including past illnesses and tre
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Q22. God and enthusiasm go hand in hand what do you feel.
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Q23. Do you have any experience.
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Q24. What level of programming you know.
Ans. 
I have advanced knowledge in programming languages such as Java, Python, and C++.
• Proficient in Java, Python, and C++

• Experience with object-oriented programming

• Familiar with software development best practices
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Q25. Java and. Net if took on same stage what difference or same they have in them.
Ans. Java and. Net have no same but a difference capabilities.
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Q26. What is your aim as an employee for this company.
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Q1. Marry plans or not for yourself.
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Q2. Asthma or aids patient which will transfer fast?
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Q3. Work and money both in need which one prefer.
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Q4. Java and .Net in vogue which one you prefer.
Ans. 
I prefer Java due to its platform independence, strong community support, and extensive libraries.
• Java is platform independent, allowing for greater flexibility in deployment.

• Java has a strong community support and a vast number of libraries available for various functionalities.

• Java is widely used in enterprise applications and has a proven track record of performance and scalability.
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Q5. Do you know any programming in Java.
Ans. 
Yes, I have extensive experience in Java programming.
• Proficient in Java programming language

• Experience with Java frameworks like Spring and Hibernate

• Developed various applications using Java

• Familiar with Java design patterns and best practices
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Q1. Will you work in less money
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Q2. What are you special in.
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Q3. Do you like work hours details and boss
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Q4. Would you like to change your civilization.
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Q5. Live interview have you attended previously.
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Q6. Good morning greet is used for only employees boss every one what do you think about it? Have you tried good morning with your friends or counterparts.
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