TCS Software Engineer Interview Questions, Process, and Tips

Q1. How a hashMap works?
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys hash to the same index, which is resolved using techniques like chaining or open addressing.

• Example: HashMap map = new HashMap<>(); map.put("apple", 5); int value = map.get("apple");
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Q2. Explain flow of a GET call in springboot
Ans. 
GET call in Spring Boot involves mapping URL to controller method, processing request, and returning response.
• GET request is received by DispatcherServlet

• DispatcherServlet consults HandlerMapping to find appropriate controller method

• Controller method processes request and returns response

• Response is converted to JSON/XML by HttpMessageConverter

• Response is sent back to client
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Q1. Explain the task and generate the answer
Ans. 
Explain the task of a Software Engineer
• Software engineers design, develop, test, and maintain software applications

• They work with programming languages like Java, Python, C++, etc.

• They collaborate with other team members to ensure the software meets requirements

• They troubleshoot and debug issues in the software

• They stay updated on new technologies and trends in the industry
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Q2. What is machine learning
Ans. 
Machine learning is a subset of artificial intelligence that involves the development of algorithms and statistical models to enable computers to learn from and make predictions or decisions based on data.
• Machine learning uses algorithms to analyze and interpret data, identifying patterns and making predictions.

• It involves training a model on a dataset to make predictions or decisions without being explicitly programme...read more
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Good questions from medium to hard

Q1. Introducw yourself
Ans. 
I am a passionate software engineer with experience in developing web applications using various technologies.
• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with languages like Java, Python, and Node.js

• Familiar with database management systems such as MySQL, MongoDB, and PostgreSQL

• Strong problem-solving skills and ability to...read more
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Q1. Projects were asked mostly
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Q1. Why you are changing
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Q2. Give me one reason to hire you
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Aptitude test including reasoning, english,maths type questions

Q1. Technical questions
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Q1. HR asking questions
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Q1. OOPS java FRAMEWORKS COLLECTION
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Q2. SPRING MVC maven jsp
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Q1. ABOUT ME and about my work
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