VVDN Technologies Software Engineer Interview Questions, Process, and Tips

Aptitude, electronics

Q1. Transformer and power supply
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Q2. What is a pointer
Ans. 
A pointer is a variable that stores the memory address of another variable.
• Pointers are used to access and manipulate memory locations directly.

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

• Example: int *ptr; // declares a pointer to an integer variable
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Q1. What all thinks happen on powering on a device.
Ans. 
When a device is powered on, several processes occur including booting up the operating system, initializing hardware components, loading necessary drivers, and launching user interface.
• Booting up the operating system

• Initializing hardware components

• Loading necessary drivers

• Launching user interface
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1.basic c program questions
2.asked array related program
3. Some operating system questions

1.asked questions on Android boot flow
2.asked previous projects

Q1. Asked about previous projects while looking at resume
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Q2. Asked why you are looking for job change?
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20 questions within 1 hour ,3-4 logical reasoning, 12-15 maths (work , time, speed, interest)

Q1. What is encapsulation
Ans. 
Encapsulation is the process of hiding implementation details and providing a public interface for accessing the functionality.
• Encapsulation helps in achieving data abstraction and information hiding

• It prevents unauthorized access to the internal details of an object

• It allows for better control over the data and its behavior

• Example: A class with private variables and public methods to access them
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Q2. What are classes, functions, objects.
Ans. 
Classes are templates for creating objects, functions are blocks of code that perform a specific task, and objects are instances of a class.
• Classes define the properties and methods of an object

• Functions are reusable blocks of code that can take input and return output

• Objects are created from a class and have their own unique properties and methods

• Example: Class - Car, Function - startEngine(), Object - myCar
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Q3. Write a program to check if pallindrome
Ans. 
Program to check if a given string is a palindrome
• Remove all non-alphanumeric characters from the string

• Convert the string to lowercase

• Reverse the string and compare with the original string
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Q4. Write a program to print a pattern * * ** ** *** *** **** **** *********
Ans. 
Program to print a pattern of stars in a specific shape.
• Use nested loops to print the stars in the desired pattern.

• The number of stars in each row increases by one until the middle row, then decreases by one.

• The number of spaces between the stars decreases by one until the middle row, then increases by one.
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Technical questions from electronic basics and c coding

Q1. Basic C programming
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Q2. Basic electronics questions
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Basic aptitude test from all English, maths subject.

Q1. Interview technical on java
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Q2. Sql and non technical as well
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Q3. Sql questions basic query select .update etc.
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Q4. Java, basic coding questions
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Q5. Non technical few questions
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