STJ Electronics Team Lead Interview Questions and Answers for Experienced

Hacker rank question - easy and medium

Design solution for problems

Q1. Design a software for car ECU
Ans. 
Design a software for car ECU
• Identify the requirements and functionalities of the ECU

• Choose a programming language and development environment

• Implement the software to control the engine, transmission, and other systems

• Test the software for reliability and performance

• Ensure the software is secure and can handle errors and exceptions
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Q1. What are your strengths and weaknesses?
Ans. 
My strengths include strong leadership skills, excellent communication, and problem-solving abilities. My weaknesses include being overly critical of myself and sometimes taking on too much responsibility.
• Strength: Strong leadership skills

• Strength: Excellent communication

• Strength: Problem-solving abilities

• Weakness: Being overly critical of myself

• Weakness: Sometimes taking on too much responsibility
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Q2. Tell me about yourself.
Ans. 
I am an experienced professional with strong leadership skills and a proven track record in managing teams.
• Experienced professional with strong leadership skills

• Proven track record in managing teams

• Excellent communication and problem-solving abilities

• Ability to motivate and inspire team members

• Focused on achieving goals and delivering results
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Q1. Implement a malloc function.
Ans. 
Implementing a malloc function involves dynamically allocating memory in C programming.
• Use the malloc function from stdlib.h library to allocate memory on the heap.

• Remember to check if the memory allocation was successful by checking if the returned pointer is not NULL.

• Don't forget to free the allocated memory using the free function to avoid memory leaks.
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Q1. Related to AOSP and one easy programming question
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Q1. More in depth about AOSP
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Q1. Mostly about the company reuirements
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Q1. Salary and joining date negotiation
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Q1. This was more like shortlisting round with manager. Asked about resume and previous work experience. Not much Technical questions.
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Q1. Python programming questions, Basics
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Q2. Python oops concepts
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Q3. What is module in Python
Ans. 
A module in Python is a file containing Python code, which can define functions, classes, and variables.
• Modules help organize Python code into reusable components

• Modules can be imported into other Python scripts using the 'import' keyword

• Examples of modules in Python include math, random, and os
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Q4. Python memory management
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Q5. Basic Devops questions
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Pointer and linked list

Pure technical on kernel programming

Q1. Pure technical questions on background project
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Q2. Mutex semaphore and spinlock
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Q3. How you will achieve multi threaded programming
Ans. 
Multi-threaded programming can be achieved by creating multiple threads that run concurrently.
• Identify the tasks that can be executed in parallel

• Create threads using threading libraries in the chosen programming language

• Synchronize the threads to avoid race conditions and deadlocks

• Use locks, semaphores, and mutexes to manage shared resources

• Optimize the performance by balancing the workload among threads
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Q1. Why you want to join this company
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Q1. About yourself and basic questions
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Q2. About your skills set to match the job
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Coding questions basic and complex questions to solve

Easy aptitude and MCQ questions in C

Q1. Inheritance, Virtual functions, and projects from resume
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Q2. How to implement inheritance, use case
Ans. 
Inheritance in software development allows a class to inherit properties and behaviors from another class.
• Create a base class with common properties and methods

• Create a derived class that inherits from the base class

• Use the 'extends' keyword in languages like Java or C++

• Override methods in the derived class if necessary

• Access parent class methods using 'super' keyword
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Q3. Virtual functions usage in code
Ans. 
Virtual functions are used in object-oriented programming to achieve polymorphism by allowing a function to be overridden in a derived class.
• Virtual functions are declared in a base class with the 'virtual' keyword and can be overridden in derived classes.

• They allow a function to be called based on the actual type of an object rather than the declared type.

• Virtual functions are used to achieve runtime polymorphism in C...read more
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Q4. What Problems did u overcome in your project
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Q1. Tell me about yourself
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Q2. How do you clean data in python
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