Sandhar Daewha Automotive Systems L2 Engineer Interview Questions and Answers

All are MCQ questions followed by 2-3 coding questions .

Duration is 45 mins and 2-3 coding questions.

Q1. All about topics mentioned in resume.
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Q1. Actually it is a management round so they asked technical questions along with hr questions.
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1 hr, there were some DSA problems

1 hr, there were some DSA problems

Q1. Any hard situation u faced ?
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Q2. How you tackled hard situation
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DBms, operating system, system design, java, opps, data structure, web development, 3 codes.

Q1. Basic questions on java, opps, dbms, data structure
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Q2. Detail explanations of oops ?
Ans. 
OOPs is a programming paradigm based on the concept of objects that interact with each other.
• OOPs stands for Object-Oriented Programming.

• It focuses on encapsulation, inheritance, and polymorphism.

• Encapsulation is the process of hiding implementation details from the user.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects to take on multiple forms or behaviors.

• Exa...read more
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Q3. Q3. Coding to Reverse the string by words .
Ans. 
Code to reverse a string by words
• Split the string into words using space as delimiter

• Reverse the order of words

• Join the words using space as delimiter
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Q4. Operating system
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Q1. What is the design pattern? Singleton Design patter
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Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Used when only one instance of a class is needed throughout the system

• Provides a global access point to the instance

• Implemented by creating a static method to return the same instance each time it is called
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Q2. Difference Hashmap and Concurrent Hashmap
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HashMap is not thread-safe, while ConcurrentHashMap allows multiple threads to read and write concurrently.
• HashMap is not synchronized and not thread-safe, while ConcurrentHashMap is synchronized and thread-safe.

• ConcurrentHashMap allows multiple threads to read and write concurrently without any external synchronization, while HashMap requires external synchronization for concurrent access.

• ConcurrentHashMap achieves hi...read more
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Q3. Collection Framework
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Q4. Difference between list , set
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List is an ordered collection of elements with duplicates allowed, while set is an unordered collection of unique elements.
• List maintains the order of elements, while set does not guarantee any specific order.

• List allows duplicate elements, while set does not allow duplicates.

• Example: List - [1, 2, 3, 1], Set - {1, 2, 3}
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Q1. Explain about activity life cycle
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Activity life cycle in Android refers to the sequence of states an activity goes through from creation to destruction.
• Activity life cycle consists of several states such as onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

• onCreate() is called when the activity is first created, onStart() is called when the activity becomes visible to the user, onResume() is called when the activity starts interacting with t...read more
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Q2. What are the components of Android
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Components of Android include activities, services, content providers, and broadcast receivers.
• Activities: User interface components that represent a single screen with a user interface.

• Services: Background tasks that run independently of the UI.

• Content Providers: Manage a shared set of app data.

• Broadcast Receivers: Respond to system-wide broadcast announcements.
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Q1. What if Flow in kotlin and why we use it, keywords of kotlin
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Kotlin Flow is a reactive stream library in Kotlin for handling asynchronous data streams.
• Kotlin Flow is used for handling asynchronous data streams in a sequential and non-blocking manner.

• It provides a way to emit multiple values asynchronously and handle backpressure.

• Keywords in Kotlin include suspend, flow, collect, emit, filter, map, etc.
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Q2. Explain about implementation patterns present in Android
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Implementation patterns in Android are design patterns that help in structuring and organizing code for better maintainability and scalability.
• MVC (Model-View-Controller) pattern separates the application into three main components to improve code organization and reusability.

• MVVM (Model-View-ViewModel) pattern separates the UI logic from the business logic, making it easier to test and maintain.

• Singleton pattern ensur...read more
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Q1. Tell me about one project you worked on?
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Q2. Tell me about yourself?
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Basic core Java questions on String, Integer & Collection

Q1. About role, project, Microservices
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Q1. Detailed questions on Spring Boot, MySql
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