ZF India Technology Center Software Developer Interview Questions and Answers

Q1. What is polymorphism?and explain
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• 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 in object-oriented programming languages like Java allows for polymorphism.

• Example: A method that takes ...read more
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Q2. What is ADAS?explain function?
Ans. 
ADAS stands for Advanced Driver Assistance Systems. It refers to technologies that assist drivers in the driving process.
• ADAS includes features like adaptive cruise control, lane departure warning, and automatic emergency braking.

• These systems use sensors and cameras to monitor the vehicle's surroundings and provide alerts or assistance to the driver.

• ADAS aims to improve safety, reduce accidents, and enhance the overal...read more
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Q1. What is virtual DOM in React?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• React uses the virtual DOM to efficiently update the actual DOM when there are changes in the application.

• When changes are made to the virtual DOM, React calculates the most efficient way to update the actual DOM, minimizing performance impact.
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Q2. Explain about Context API in react?
Ans. 
Context API is a feature in React that allows sharing data between components without having to pass props through every level of the component tree.
• Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

• It is useful for sharing global data such as themes, user authentication, or language preferences.

• Context API consists of three main parts: Provider...read more
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Coding questions are arrays,strings mostly

Q1. Project explain detaily,some oops concepts and data structures
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Q1. Oops and pointers
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Q2. Recursion and basic questions on for and while loop
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Q1. What was your most difficult taks at work and how did you deal with it?
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Q1. What is difference between mallock ( C ) and "new" ( C++ )
Ans. 
malloc is a function in C used to allocate memory dynamically, while 'new' is an operator in C++ used for the same purpose.
• malloc is a function in C, while 'new' is an operator in C++.

• malloc returns a void pointer, while 'new' returns a pointer of the specified type.

• malloc does not call constructors, while 'new' calls constructors for the allocated memory.

• malloc requires manual memory deallocation with free(), while 'n...read more
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Q1. C and security, protocol, middleware
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Q1. Questions related to my M.Tech and Ph.D projects.
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Q2. Questions related to Kalman filter
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Q1. Basic questions related to area of expertise
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Short codes like macros , bitwise operation , register level coding , include guards etc are asked

Q1. Autosar layer architecture
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Q1. General hr questions
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