ZF Commercial Vehicle Control Systems Software Engineer Interview Questions and Answers

Q1. How would you preprocess the raw data
Ans. 
Preprocessing raw data involves cleaning, transforming, and organizing data to make it suitable for analysis.
• Remove any irrelevant or duplicate data

• Handle missing values by imputation or deletion

• Normalize or standardize numerical data

• Encode categorical variables using techniques like one-hot encoding

• Feature scaling for machine learning algorithms

• Perform text preprocessing like tokenization and stemming
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Q2. How would you specify a solution that has been already existing
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Specify the existing solution by documenting its architecture, components, technologies used, and any modifications made.
• Document the architecture of the solution, including high-level components and their interactions

• List the technologies used in the solution, such as programming languages, frameworks, and databases

• Describe any modifications or customizations made to the existing solution

• Include any performance metric...read more
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Q1. Embedded qns and oops qns
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Q2. What is virtual function
Ans. 
A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function with the same signature in a derived class.
• Virtual functions allow for dynamic polymorphism in object-oriented programming.

• They are used to achieve runtime polymorphism by allowing a function to be called based on the type of object it is called on.

• Virtual functions are declared in a base cl...read more
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Q3. What is polymorphism
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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.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q4. Please don't attend this interview
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Q5. Idon'tknow hahab
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In depth coding test with bit level operations and memory concepts

C++ coding test with focus on design patterns

Q1. Manager round about previous experience and working project
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Q2. What is your experience in feature development
Ans. 
I have extensive experience in feature development, having worked on multiple projects and delivered successful features.
• Developed features for various software applications

• Collaborated with cross-functional teams to gather requirements and design solutions

• Implemented features using agile methodologies and best practices

• Conducted testing and debugging to ensure quality and functionality

• Continuously improved features ba
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Q3. Why the job change currently
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Q1. What are your strengths and weakness?
Ans. My strength is Hardworking weakness are focusing on every details which makes my work time consuming
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Q1. What is Watchdog timer?
Ans. 
A Watchdog timer is a hardware or software mechanism that automatically resets or restarts a device if it stops responding or functioning properly.
• Watchdog timer is used to prevent system crashes or freezes by monitoring the system and resetting it if necessary.

• It is commonly used in embedded systems, where reliability is crucial.

• The timer needs to be periodically reset by the software to prevent the system from resett...read more
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Q2. What is Compiler?
Ans. 
A compiler is a software program that translates code written in a high-level programming language into machine code.
• Converts high-level code to machine code

• Checks for syntax errors

• Optimizes code for better performance

• Examples: GCC, Clang, Visual C++
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Q3. What is volatile memory?
Ans. 
Volatile memory is temporary memory that loses its data when power is turned off.
• Volatile memory requires constant power to retain data

• Examples include RAM (Random Access Memory) and cache memory

• Data stored in volatile memory is lost when the device is turned off
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Q1. Do you like Bangalore?
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Q2. What is your favourite festival?
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Q3. Do you like to work something from the start or can something which already worked by someone else?
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Assignments with Reasoning and maths etc.

Coding test, on C, around 1 hr, on teams

Q1. C basics Embedded C Aptitude
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