TCS Associate Systems Engineer Interview Questions, Process, and Tips for Experienced

Numerical,logical and general

Simple coding question.

Q1. Tell me about yourself
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Q2. And basic question in C since I was from mechanical background
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Q1. Just tell me about yourself and document verification.
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I applied through NQT. Apti Test+2 coding qs.

Q1. Basic question regarding project, college exp, Java 8 feature, set vs map, OOPS!
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Q2. Explain Java 8 Feature
Ans. 
Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to pass functionality as an argument to a method.

• Functional interfaces have a single abstract method and can be used with lambda expressions.

• Streams provide a way to work with sequences of elements efficiently.

• Default methods allow interfaces to have method implementation...read more
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Q3. Explain diff -- Set vs Map
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Set and Map are both data structures in Java, but Set stores unique elements while Map stores key-value pairs.
• Set does not allow duplicate elements, while Map allows duplicate values but not duplicate keys.

• In Set, elements are stored in an unordered manner, while in Map, key-value pairs are stored.

• Example: Set<String> set = new HashSet<>(); Map<String, Integer> map = new HashMap<>();
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Q4. OOPs full concept--all 4 points, class, obj
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Q5. Describe the project in 5 min
Ans. 
Developed a web-based inventory management system for a retail company
• Used Java and Spring framework for backend development

• Implemented responsive design using HTML, CSS, and JavaScript for frontend

• Integrated with third-party APIs for payment processing and order tracking
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Online proctored aptitude test

Q1. Questions on DSA, OOP terminologies, etc
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Q1. Situational questions based on the discussion
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Q1. Write query to find leap year
Ans. 
Query to find leap year in SQL
• Use modulo operator (%) to check if year is divisible by 4

• If year is divisible by 100, also check if it is divisible by 400

• Return years that meet both conditions as leap years
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I took classes for aptitude reasoning

Coding also in the 1st round only i know C better so i gave the attempt with some practice

Q1. In the technical interview they asked me about java concepts as i was from CSE background they asked oops, a logic for a swapping problem without using 3rd variable and some more
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Q2. Tell about oops concepts What is inheritance? Is multiple inheritance possible in java? What is mutable in java? What is the function of malloc, calloc etc? Difference between delete and truncate? And ...read more
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Questions on OOPs concepts, inheritance, mutable in Java, memory allocation functions, and difference between delete and truncate.
• Inheritance is a mechanism in OOPs where a class can inherit properties and methods from another class.

• Java supports single inheritance but not multiple inheritance.

• Mutable in Java refers to objects whose state can be modified after creation.

• Malloc and calloc are memory allocation functions ...read more
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Q3. In HR round they asked me self intro, am i willing to relocate or not and general questions
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Generate codes for billing

Q1. Favourite Subject, Specific chapter explanation
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