TCS System Engineer Hardware Interview Questions, Process, and Tips

2 coding questions based on arrays and strings.

Q1. Approach of coding question in round 1
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Q2. Web technology basics
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Q3. How to secure web app
Ans. 
Securing a web app involves implementing various measures to protect against attacks and vulnerabilities.
• Use HTTPS to encrypt data in transit

• Implement strong authentication and authorization mechanisms

• Regularly update and patch software and libraries

• Use input validation and output encoding to prevent injection attacks

• Implement security headers to prevent cross-site scripting and clickjacking

• Regularly perform security a...read more
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Q4. How to scale web app
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Scaling a web app involves optimizing resources, load balancing, and implementing caching strategies.
• Use load balancers to distribute traffic across multiple servers

• Optimize database queries and use caching to reduce server load

• Implement auto-scaling to add or remove resources based on traffic

• Use content delivery networks (CDNs) to serve static assets

• Consider using microservices architecture to break down the app into ...read more
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Q5. Managerial questions: Hobbies Where do you see yourself in 5 years How will you stay motivated
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Easy to medium difficulty questions were asked. Topics from QA, Reasoning and ENglish were mostly asked.

Was held on the TCS ion platform from home. Consisted of 2 basic questions around array and String manipulation in Python/Java. Compiler is very bad as it won't tell you accurately where and what something went wrong. The editor offers no autocomplete, suggestions, code beautify, etc.

Q1. They'll ask you fundamental questions about the things you've mentioned in your CV. Some panellists will ask many questions about your project(s). Questions I remember - how to add bootstrap to your projec...read more
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Numerical Ability,Logical Reasoning,Verbal Ability,Coding

Q1. Explain Java 8 Features
Ans. 
Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to write code in a more concise way.

• Functional interfaces are interfaces with a single abstract method, used for lambda expressions.

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

• Default methods allow interfaces to have method implementations.

• Example: Lambda exp...read more
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Q2. Explain about your projects
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Q1. They asked technical questions here aswell.
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Q1. As I have failed in a subject they asked Why u have failed in a subject?
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First round was of Aptitude and Coding. It inovled questions testing your logical,mathematical and reasoning skills. Two coding questions was of easy and medium difficulty

Q1. Basics of python, questions on skills mentioned in resume, projects etc.
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Q2. Certification details
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Simple coding question based on permutation and combination.

Q1. What are the various joins in SQL
Ans. 
SQL joins are used to combine data from two or more tables based on a related column between them.
• Inner join: returns only the matching rows from both tables

• Left join: returns all the rows from the left table and matching rows from the right table

• Right join: returns all the rows from the right table and matching rows from the left table

• Full outer join: returns all the rows from both tables, with NULL values in the colu...read more
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Q2. What is garbage collector in JAVA
Ans. 
Garbage collector in JAVA is a program that automatically frees up memory by removing objects that are no longer in use.
• Garbage collector is a part of JVM that manages memory allocation and deallocation

• It runs in the background and frees up memory by removing objects that are no longer in use

• It helps prevent memory leaks and improves performance

• Examples of garbage collectors in JAVA are Serial, Parallel, CMS, and G1
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Q3. Agile methodology cycle
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Medium to high level aptitude questions in tcs NQT

2 medium level coding questions in nqt test included

Q1. Technical interview with basic coding questions like find xor etc , including puzzles and project discussion
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