Cognizant Embedded Engineer Interview Questions and Answers

Structure, union and project work

Q1. What is pointer
Ans. 
A pointer is a variable that stores the memory address of another variable.
• Pointers are used to access and manipulate memory directly.

• They are often used in programming languages like C and C++.

• Example: int *ptr; // declares a pointer to an integer variable
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Q2. What is stack ?
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Stack is a data structure that follows Last In First Out (LIFO) principle, used for storing temporary data in a program.
• Stack is a linear data structure with two main operations: push (adds data) and pop (removes data).

• Example: function call stack in programming languages like C, where function calls are added and removed in a LIFO manner.

• Stack memory is used for local variables and function call management.

• Stack overf...read more
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C basics , data structure, logical questions.
, pointers

Percentage, speed, series, logical abulity, differnces

Q1. C programs, protocols, Embedded C, pointers
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Q2. Strings swapping nibbles using c
Ans. 
Swapping nibbles of strings in C
• Use bitwise operations to swap the nibbles of each character in the string

• Iterate through each character in the string and swap the nibbles

• Ensure to handle edge cases like strings with odd length or non-hex characters
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Q3. I2c, can, spi, uart
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Q1. Normal hr questions
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Q2. Self, company details
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Q1. What is basic of c
Ans. 
Basics of C include syntax, data types, variables, functions, and control structures.
• C is a procedural programming language

• Variables must be declared before use

• Functions are blocks of code that perform a specific task

• Control structures include if-else, loops, and switch-case

• Data types in C include int, float, char, etc.
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Q2. What is basic of embedded
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Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.
• Embedded systems are typically designed to be small, efficient, and reliable.

• They often have limited resources such as memory, processing power, and energy.

• Examples of embedded systems include microcontrollers in household appliances, automotive control systems, and industrial automation.

• Embedded software is spe...read more
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Q3. What is basic of contoller
Ans. 
The basic of a controller is to manage and regulate the operation of a system or device.
• Controllers receive input signals and process them to generate output signals.

• They can be programmed to perform specific tasks or functions.

• Examples include microcontrollers, PLCs, and PID controllers.
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It was really good and the interview was proctored

It consists of five questions and they are also mid level questions

They took the first round for one hour. They asked related to the projects which i have worked on and questions related to project

Q1. What is the reason to leave previous company
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