TCS Interview Questions, Process, and Tips for Freshers

Q1. Basic OOPs relate questions: Oops concept, Immutable class, inheritance, Exception handling in Spring, Spring MVC, Swap 2 numbers, 2nd highest salary
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Q1. String is palindrome or not
Ans. 
Check if a string is a palindrome or not
• Compare the string with its reverse to check for palindrome

• Ignore spaces and punctuation marks when comparing

• Examples: 'racecar' is a palindrome, 'hello' is not
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Q2. Create gcs bucket using python
Ans. 
Use Python to create a GCS bucket
• Import the necessary libraries like google.cloud.storage

• Authenticate using service account credentials

• Use the library functions to create a new bucket
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Q3. Write a python code to trigger a dataflow job in cloud function
Ans. 
Python code to trigger a dataflow job in cloud function
• Use the googleapiclient library to interact with the Dataflow API

• Authenticate using service account credentials

• Submit a job to Dataflow using the projects.locations.templates.launch endpoint
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Q1. Explain different types of data sets
Ans. 
Different types of data sets include numerical, categorical, ordinal, and time series data.
• Numerical data sets consist of numbers and can be continuous or discrete (e.g. heights of individuals, temperatures).

• Categorical data sets represent categories or groups (e.g. colors, types of cars).

• Ordinal data sets have a specific order or ranking (e.g. ratings, levels of education).

• Time series data sets involve observations ta...read more
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Q2. Difference between list and tuple
Ans. 
List is mutable, tuple is immutable in Python.
• List can be modified after creation, tuple cannot.

• List uses square brackets [], tuple uses parentheses ().

• List is used for collections of items that may change, tuple for fixed collections.
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Q3. Interview related to my M-Tech project
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Q1. How node.js works?
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient.

• It is built on the V8 JavaScript engine from Google Chrome.

• Node.js allows you to easily build scalable network applications.

• Example: Creating a simple HTTP server in Node.js - const http = require('http'); http.createServer((req, res) => { res....read more
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Q2. What is Event Emitter ?
Ans. 
Event Emitter is a class in Node.js that allows objects to subscribe to events and be notified when those events occur.
• Event Emitter is a core module in Node.js

• It allows multiple objects to listen for and respond to events

• Objects can emit events using the 'emit' method

• Listeners can be added using the 'on' method

• Example: const EventEmitter = require('events');
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Q3. Tell me about event loop?
Ans. 
Event loop is a mechanism that allows for asynchronous programming by handling events and callbacks.
• Event loop is a single-threaded mechanism used in programming languages like JavaScript to handle asynchronous operations.

• It continuously checks the call stack for any functions that need to be executed, and processes them in a non-blocking manner.

• Event loop allows for efficient handling of I/O operations, timers, and ca...read more
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Q4. Questions related to my projects.
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Q1. Salary discussion
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Technical MCQs and coding question

Q1. Java ,opps concepts,os topics
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Q1. Behavioural questions
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1st round was hard to clear but i had cleared the round and moved to interview

Q1. Python Questions
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Q2. DBMS and some MR Questions
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Q1. Asked about college
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Q2. Asked about will you join us or not i answered yes but not cleared hr
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