TCS Junior Engineer Interview Questions, Process, and Tips

Q1. What is constructor?
Ans. 
A constructor is a special type of method in a class that is automatically called when an object of that class is created.
• Constructors have the same name as the class they belong to

• Constructors do not have a return type

• Constructors can be used to initialize the object's state or perform any necessary setup

• Example: public class Car { public Car() { // constructor code here } }
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Q2. What is spring boot ?
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Spring Boot is a Java-based framework used to create stand-alone, production-grade Spring-based Applications.
• Spring Boot simplifies the process of developing and deploying Spring applications.

• It provides a set of pre-configured tools and conventions to get started quickly.

• Spring Boot eliminates the need for manual configuration and boilerplate code.

• It includes embedded servers like Tomcat, Jetty, or Undertow for easy d...read more
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Q3. What is diff between array and arraylist
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Array is a fixed-size data structure while ArrayList is a dynamic-size data structure in Java.
• Array is a fixed-size collection of elements of the same data type, while ArrayList is a dynamic-size collection that can grow or shrink as needed.

• Arrays can store primitive data types and objects, while ArrayList can only store objects.

• Arrays require a specified size at the time of creation, while ArrayList can dynamically re...read more
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Q4. Diff between throw and throws
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throw is a keyword used to explicitly throw an exception in Java, while throws is used in method signature to declare the exceptions that can be thrown by the method.
• throw is used to throw an exception explicitly in Java code

• throws is used in method signature to declare the exceptions that can be thrown by the method

• Example: throw new Exception();

• Example: public void method() throws Exception {};
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Q1. Salary expectations
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As a fresher I applied, it basic aptitude

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Q1. Tell me about yourself ?
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Q2. Tell me your strengths and weakness?
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My strengths include problem-solving skills, attention to detail, and ability to work well in a team. My weakness is that I can be overly critical of my own work.
• Strengths: problem-solving skills

• Strengths: attention to detail

• Strengths: ability to work well in a team

• Weakness: overly critical of my own work
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Q3. Projects you had worked on?
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I have worked on projects involving building automation systems and IoT devices.
• Developed a smart home system using Raspberry Pi and sensors

• Implemented a temperature control system for a greenhouse using Arduino

• Designed a monitoring system for energy consumption in buildings
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Q4. Languages you know as per of your skillset?
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Q1. Dedup sort questions
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Yes

Q1. Where do you see yourself in 5 years?
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Q2. What are your strengths and weaknesses?
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Q3. Why should we hire you?
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Q4. Share details of your previous job.
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Q5. What are your salary expectations?
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Q6. What is your family background?
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Q7. Tell me about yourself.
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Q8. Why are you looking for a change?
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Q9. What is c programming
Ans. 
C programming is a high-level language used for system programming, embedded systems, and game development.
• C is a compiled language

• It has a rich set of operators and built-in functions

• C is used for developing operating systems, device drivers, and firmware

• Examples of C-based software include Linux, MySQL, and Adobe Photoshop

• C is known for its efficiency and speed
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Q10. What is javascript what is angular
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JavaScript is a programming language used for web development. Angular is a JavaScript framework for building web applications.
• JavaScript is a client-side scripting language used for creating interactive web pages.

• Angular is a JavaScript framework developed by Google for building dynamic web applications.

• Angular uses TypeScript, a superset of JavaScript, for building applications.

• Angular provides features like two-way ...read more
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Q11. What is c++ what is ios
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C++ is a high-level programming language used for developing software and applications. iOS is a mobile operating system developed by Apple.
• C++ is an object-oriented language

• iOS is used for developing applications for Apple devices

• C++ is used for developing operating systems, browsers, games, and more

• iOS is known for its user-friendly interface and security features
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Q12. What is program for inheritance in java
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Inheritance in Java allows a class to inherit properties and methods from another class.
• A subclass can inherit from a superclass using the 'extends' keyword

• The subclass can access the public and protected members of the superclass

• The 'super' keyword is used to call the constructor or method of the superclass

• Inheritance promotes code reuse and allows for polymorphism

• Example: class Dog extends Animal { ... }
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Q13. What is html what is https
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HTML is a markup language used to create web pages. HTTPS is a secure version of HTTP protocol used for secure communication over the internet.
• HTML stands for HyperText Markup Language

• It is used to create the structure and content of web pages

• HTTPS stands for HyperText Transfer Protocol Secure

• It is a secure version of HTTP protocol used for secure communication over the internet

• It uses SSL/TLS encryption to protect the...read more
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