TCS Electronics Engineer Interview Questions and Answers

Aptitude exam was about time, distance, verbal reasoning, work, and all. It was easy.

Q1. Draw OR gate and AND gate
Ans. 
An OR gate outputs true if at least one input is true; an AND gate outputs true only if all inputs are true.
• OR Gate Symbol: A curved shape with two inputs and one output.

• AND Gate Symbol: A flat shape with two inputs and one output.

• Example of OR Gate: If input A is 0 and input B is 1, output is 1.

• Example of AND Gate: If input A is 1 and input B is 1, output is 1.
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Q2. SWAP program for two variables
Ans. 
A SWAP program exchanges the values of two variables without using a temporary variable.
• Use XOR operation to swap two variables without using a temporary variable.

• Example: a = 5, b = 10. After swapping, a = 10, b = 5.

• Ensure to handle cases where the variables are the same.
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Aptitude test and code test is there for and need to pass

Q1. Technical round with logical and theory questions will be there
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Q2. What is inheritance and type of
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Inheritance allows for code reusability and promotes a hierarchical relationship between classes.

• There are different types of inheritance such as single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Example: Class B inheriting from Class A - 'class B exten...read more
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Q3. What is poly morph sm
Ans. 
Polymorphism is a concept in object-oriented programming where a single function or method can operate on different types of data.
• Polymorphism allows for flexibility and reusability in code

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding)

• Example: a function that can calculate the area of different shapes (circle, square, triangle) based on the input type
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Q4. What is class and how to create
Ans. 
A class is a blueprint for creating objects in object-oriented programming.
• Classes define the properties and behaviors of objects.

• To create a class, use the 'class' keyword followed by the class name and curly braces.

• Inside the class, you can define attributes (variables) and methods (functions).

• Example: class Car { String color; void start() { //code here } }
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Q5. What are the data type
Ans. 
Data types are classifications that specify which type of value a variable can hold.
• Data types include integers, floating point numbers, characters, strings, and booleans.

• Examples of data types are int (for integers), float (for floating point numbers), char (for characters), and bool (for booleans).
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Q6. What is join in sql
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Join in SQL is used to combine rows from two or more tables based on a related column between them.
• Join is used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q1. Question based on salary negotiation and background and qualifications
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