TCS Walk-in Drive For Software Developer

Tata Consultancy Services (TCS) is an Indian multinational technology company specializing in information technology services and consulting. Headquartered in Mumbai, it is a part of the Tata Group and operates in 150 locations across 46 countries. As of 2024, Tata Sons owned 71.74% of TCS, and close to 80% of Tata Sons’ dividend income came from TCS.

In September 2021, TCS recorded a market capitalization of US$200 billion, becoming the first Indian IT company to achieve this valuation. In 2012, it was the world’s second-largest user of U.S. H-1B visas.

TCS Latest Interview Questions :

🔹 Python Developer / Software Engineer :

What’s the difference between a tuple and a list?

Answer: Tuples are immutable; lists are mutable. Tuples use (); lists use [].

Explain Python generators.

Answer: Generators use yield to return one value at a time and are memory-efficient since they don’t store the entire sequence.
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How are arguments passed in Python—by value or by reference?

Answer: Python uses pass-by-object-reference: mutables like lists can be altered via references; immutables like ints behave like pass-by-value.

What is bytecode? How does Python execute it?

Answer: Python source is compiled into bytecode (.pyc), then executed by the Python interpreter.

Define iterators in Python.

Answer: An iterator is an object that implements __iter__() and __next__(), allowing you to traverse collections sequentially.

🔹 Core Programming / Data Structures :

Explain data structures like list, tuple, set, and dict:

Lists are ordered & mutable, tuples ordered & immutable, sets unordered & unique, and dicts unordered key-value pairs

OOP Concepts:

Questions on classes, objects, inheritance, polymorphism (runtime and compile-time), and abstraction are commonly covered

🔹 Frameworks / REST / DevOps :

Basic Spring Boot/REST questions:

What is @Component/@Service/@Repository? How do you create RESTful services and secure them using JWT or OAuth2?

DevOps/Cloud interview topics:

Concepts like scalability vs. elasticity, CI/CD pipelines, containers (e.g., Docker), and IaC are sometimes discussed

🔹 Java & Core Concepts :

Difference between == and .equals(): == checks reference equality while .equals() checks object content.

Features of Java 8: Lambdas, Streams, Optional, new Date–Time API

Collections: Differences between ArrayList vs LinkedList, HashMap internals, exception handling basics.

🔹 SQL / Database :

Example: Write SQL for the second-highest salary:

sql
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SELECT MAX(salary) FROM employee
WHERE salary < (SELECT MAX(salary) FROM employee);

🔹 HR & Behavioral :

Tell me about yourself – Brief academic and project summary.

Why TCS? – Talk about its values, innovation, and learning culture.

Strengths & weaknesses – Be honest and positive.

Handling rejection – Show resilience and growth:

“I’d treat rejection as feedback and come back stronger.”

Reddit tips:

“Technical: questions on Java, DBMS, Spring Boot, MySQL, reverse string in Python…”

“Managerial round: be calm … even if you don’t know the ans just portray as if this job is all you want…”

🌟 Preparation Strategy :

Python & Core Java: Understand data types, control flow, OOP, file I/O.

Web technologies & frameworks: Brush up on REST API, Spring Boot, authentication, microservices basics.

Databases: Basic SQL joins, subqueries, normalization.

Behavioral: Prep answers using the STAR method for common HR questions.

Soft Skills: Communication, adaptability, positivity in interviews (especially managerial/HR).