Knorr-Bremse Software Developer Intern Interview Questions and Answers

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, providing different func
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Q2. Why You choose java
Ans. 
I chose Java for its platform independence, strong community support, and extensive libraries.
• Platform independence allows Java code to run on any device with a JVM

• Strong community support ensures access to resources and help when needed

• Extensive libraries provide pre-built solutions for common programming tasks
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Q1. Do you have 3+ years of experience in WPF, C# .NET development & MVVM design patterns?
Ans. 
Yes, I have over 5 years of experience in WPF, C# .NET development, and MVVM design patterns.
• Yes, I have 5+ years of experience in WPF development.

• Yes, I have 5+ years of experience in C# .NET development.

• Yes, I have 5+ years of experience in MVVM design patterns.
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Q2. Tell me about the projects you worked with WPF
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Q3. Why do you relive your current company?
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Q1. 1. How do you implement multiple inheritance in C#? 2. What is INotifiedPropertyChanged?
Ans. 
1. Multiple inheritance in C# can be achieved using interfaces. 2. INotifyPropertyChanged is an interface used for data binding in WPF and Silverlight applications.
• Multiple inheritance in C# can be implemented using interfaces, as C# does not support multiple inheritance of classes.

• Create multiple interfaces and implement them in a single class to achieve multiple inheritance.

• Example: interface Interface1 { void Method...read more
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Q2. How to avoid "While Loop" to acquire Data?
Ans. 
Use alternative methods like callbacks, promises, or async/await to avoid blocking while loops for data acquisition.
• Use callbacks to handle asynchronous data retrieval without blocking the main thread.

• Utilize promises to handle asynchronous operations and avoid the need for while loops.

• Implement async/await to write asynchronous code in a synchronous manner without the need for while loops.
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Q3. What is Delegates? Explain its Use cases
Ans. 
Delegates are a type-safe function pointers used in C# to reference methods.
• Delegates allow methods to be passed as parameters

• Delegates can be used to define callback methods

• Delegates are commonly used in event handling
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Q1. 1. How to do bit manipulation? 2. write a code for numeric text box using MVVM design pattern 3. how do you connect motor with PC? 4. difference between threads & timers in C#? 5. how do you handle Race Co...read more
Ans. 
Answers to various technical questions related to software engineering.
• 1. Bit manipulation involves manipulating individual bits in a binary number to perform operations like setting, clearing, toggling, or shifting.

• 2. MVVM (Model-View-ViewModel) design pattern separates the user interface from the business logic by introducing a ViewModel to manage the data and behavior.

• 3. Connecting a motor to a PC typically involves...read more
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Moderate level aptitude but cutoff was at 75%

Q1. Mainly c, aptitude
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Q1. Tell me about yourself?
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Related to dbms,os,networking

Q1. Basics of computer science
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Q2. Introduce yourself, about family etc..
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Q3. What is unix shell
Ans. 
Unix shell is a command-line interpreter that provides a user interface for interacting with the operating system.
• It is a program that takes commands from the keyboard and gives them to the operating system to perform.

• It allows users to execute commands, run scripts, manage files, and perform various other tasks.

• Common Unix shells include Bash, Zsh, and Ksh.

• Shell scripting is a powerful tool for automating tasks and wr
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Q4. Python basics such as list, tuples
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Q5. Why should we hire you
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Q1. Explain V Cycle of SDLC.
Ans. 
V Cycle is a software development model where each phase is represented by a downward and upward slope forming a V shape.
• Requirements are gathered at the top left of the V, followed by design, implementation, testing, and deployment.

• Each phase has a corresponding testing phase to ensure quality at every step.

• The V Cycle allows for early detection and correction of defects.

• It is also known as the Verification and Valida
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Q2. What are the testing strategies?
Ans. 
Testing strategies are methods used to ensure software quality and identify defects.
• Types of testing include unit testing, integration testing, system testing, and acceptance testing.

• Other strategies include manual testing, automated testing, regression testing, and performance testing.

• Testing can also involve black box testing, white box testing, and gray box testing.

• Exploratory testing, usability testing, and securit...read more
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Assignments with Reasoning and maths etc.

Q1. To introduce urself. About ur career background. Your educational details. Previous job details related yo project.
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Q2. Maily focus on the projects u done. All question related what u mentions in CV. Basic of Embedded C, communication protocol.
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Q3. CAN, LIN related questions, logical question
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Q1. Intro about Ur Self, last CTC, Whole Communication process takes in CAR? And some technical question
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