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TCS System Engineer Interview Questions and Answers for Experienced

Updated 30 Jun 2025

123 Interview questions

A System Engineer was asked 12mo ago
Q. Write an SQL query to find the second largest value in a table.
Ans. 

SQL query to find the 2nd largest value in a table

  • Use the ORDER BY clause to sort the values in descending order

  • Use the LIMIT clause to retrieve the second row

A System Engineer was asked 12mo ago
Q. What are the basic coding differences between C and Python?
Ans. 

Basic coding in Python involves understanding syntax, data types, and control structures to solve problems effectively.

  • Python uses indentation to define code blocks, unlike other languages that use braces.

  • Common data types include integers, floats, strings, and lists. Example: myList = [1, 2, 3]

  • Control structures like if-else statements and loops (for, while) are essential for flow control. Example: for i in range...

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A System Engineer was asked
Q. Write a program to display patterns.
Ans. 

Program to display patterns using arrays of strings

  • Use nested loops to iterate through rows and columns of the array

  • Fill the array with characters to create the desired pattern

  • Print each row of the array to display the pattern

A System Engineer was asked
Q. Write a C code implementation of the bubble sort algorithm.
Ans. 

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

  • Initialize an array of strings to be sorted

  • Use nested loops to compare adjacent elements and swap them if necessary

  • Repeat the process until the array is sorted

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A System Engineer was asked
Q. Write a Java program to print a pyramid pattern.
Ans. 

Code to build a pyramid in Java using nested loops

  • Use nested loops to print spaces and stars in each row

  • Increment the number of stars and decrease the number of spaces in each row

  • Handle the pyramid height dynamically

🔥 Asked by recruiter 4 times
A System Engineer was asked
Q. What is a protocol?
Ans. 

Protocol is a set of rules that govern the communication between devices in a network.

  • Protocol defines the format, timing, sequencing, and error checking of data transmission.

  • Examples of protocols include TCP/IP, HTTP, FTP, and SMTP.

  • Protocols ensure that devices can communicate effectively and understand each other's messages.

A System Engineer was asked
Q. What are the differences between public, private, and protected access modifiers in Java?
Ans. 

In Java, public, private, and protected are access modifiers used to control the visibility of classes, methods, and variables.

  • public: accessible from any other class

  • private: accessible only within the same class

  • protected: accessible within the same package and subclasses

  • Example: public class MyClass {}

  • Example: private int myVar;

  • Example: protected void myMethod() {}

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A System Engineer was asked
Q. Write a program to print a simple star pattern using loops.
Ans. 

A simple star pattern program demonstrates the use of loops to create a visual representation of stars in a structured format.

  • Use nested loops: An outer loop for rows and an inner loop for columns.

  • Example: For 5 rows, the outer loop runs 5 times.

  • In the inner loop, print '*' for each column in the current row.

  • Add a newline after each row to move to the next line.

A System Engineer was asked
Q. Can you provide real-life examples of data structures?
Ans. 

Data structures are used in various real-life scenarios to organize and manage data efficiently.

  • Phone contacts stored in a hash table for quick access

  • Employee records stored in a linked list for easy insertion and deletion

  • File system organized as a tree structure for hierarchical storage

A System Engineer was asked
Q. How can you swap the values of two variables without using a third variable?
Ans. 

Swap two variables values without using third variable

  • Use XOR operation to swap two variables without using a third variable

  • Example: a = 5, b = 10. a = a XOR b, b = a XOR b, a = a XOR b

  • Ensure variables are not the same to avoid getting zero as result

TCS Interview Experiences

366 interviews found

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
No response

I appeared for an interview in Dec 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. All Linux commands and options
  • Ans. 

    There are numerous Linux commands with various options for system engineers to manage and troubleshoot systems.

    • Commands like ls, cd, mkdir for file system operations

    • Commands like ps, top, htop for process management

    • Commands like ifconfig, ip, route for network configuration

    • Commands like grep, sed, awk for text processing

    • Options like -r for recursive, -f for force, -l for long listing

  • Answered by AI
  • Q2. How to configure NFS, NTP,DNS servers
  • Ans. 

    To configure NFS, NTP, and DNS servers, you need to edit configuration files and restart the respective services.

    • Edit /etc/exports file for NFS server configuration

    • Edit /etc/ntp.conf file for NTP server configuration

    • Edit /etc/named.conf file for DNS server configuration

    • Restart nfs, ntp, and named services after making changes

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Linux Patch Management
  • Q2. Linux servers updates
Round 3 - HR 

(1 Question)

  • Q1. Why you want to join TCS
  • Ans. 

    I want to join TCS because of its reputation for innovation and growth opportunities.

    • TCS is known for its cutting-edge technology solutions

    • I am impressed by TCS's commitment to employee development

    • I believe TCS will provide me with a challenging and rewarding work environment

  • Answered by AI
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Naukri.com and was interviewed in Dec 2024. There were 2 interview rounds.

Round 1 - Technical 

(3 Questions)

  • Q1. Technical based
  • Q2. What is different between workgroup and domain
  • Ans. 

    Workgroup is a peer-to-peer network where each computer has its own security settings, while a domain is a centralized network managed by a server with shared security settings.

    • Workgroup is decentralized, each computer manages its own security settings

    • Domain is centralized, managed by a server with shared security settings

    • Workgroup is suitable for small networks, domain is suitable for larger networks

    • In a workgroup, us...

  • Answered by AI
  • Q3. What should a system administrator`s routine be?
  • Ans. 

    A system administrator's routine involves monitoring system performance, troubleshooting issues, implementing security measures, and maintaining backups.

    • Regularly monitoring system performance and resource usage

    • Troubleshooting and resolving technical issues as they arise

    • Implementing and maintaining security measures to protect the system from cyber threats

    • Performing regular backups and ensuring data integrity

    • Updating s...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. Dsfsdf sdfsd sdf sd f

Interview Preparation Tips

Interview preparation tips for other job seekers - Fhyygufguy fbi iu f eh ji ur f bj ugj

System Engineer Interview Questions & Answers

user image Akash Ghadage

posted on 6 Jan 2025

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Aptitude Test 

Aptitude tests typically assess quantitative skills and reasoning abilities.

Round 2 - Coding Test 

Two programming questions: the first is easy, and the second is medium.

Round 3 - Technical 

(2 Questions)

  • Q1. Can you describe your background and experience? What can you share about your project-related experiences?
  • Ans. 

    I have a strong background in system engineering with experience in various projects.

    • Bachelor's degree in Computer Science with a focus on system engineering

    • Worked on implementing and maintaining network infrastructure for a large corporation

    • Experience with virtualization technologies such as VMware and Hyper-V

    • Managed projects involving system upgrades and migrations

    • Certified in Cisco networking and Microsoft server te...

  • Answered by AI
  • Q2. What is your understanding of Java Object-Oriented Programming (OOP)?
  • Ans. 

    Java OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

    • Java OOP involves the use of classes and objects.

    • Encapsulation is a key concept where data is kept private within a class and accessed through public methods.

    • Inheritance allows one class to inherit attributes and methods from another class.

    • Polymorphism enables objects to be...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare technical topics with an emphasis on enhancing communication skills.
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Technical about OTC cycle
  • Q2. Questions on your previous work
Round 2 - HR 

(2 Questions)

  • Q1. Salary discussed
  • Q2. Joining date discussed

System Engineer Interview Questions & Answers

user image Afroz Pasha

posted on 19 Feb 2025

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Small coding challenges consisting of 2 questions

Round 2 - Technical 

(2 Questions)

  • Q1. Introduce yourself
  • Ans. 

    I am a highly skilled System Engineer with 5+ years of experience in designing, implementing, and maintaining complex IT systems.

    • 5+ years of experience in system engineering

    • Proficient in designing and implementing IT systems

    • Strong troubleshooting and problem-solving skills

    • Experience with network security and data protection

    • Certified in relevant technologies such as Cisco or Microsoft

  • Answered by AI
  • Q2. What project you have worked on
  • Ans. 

    I have worked on a project to implement a new network infrastructure for a large company.

    • Designed network architecture to support increased bandwidth requirements

    • Implemented new routers and switches to improve network performance

    • Configured security protocols to protect against cyber threats

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Please do not join TCS. They'll pressure you like anything once you are on bench
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Nqt and was interviewed in Nov 2024. There were 4 interview rounds.

Round 1 - Aptitude Test 

,apti include normal math question and Reasoning math

Round 2 - Coding Test 

I choose python for code

Round 3 - Technical 

(1 Question)

  • Q1. They are asking basic programming questions, then opps concept
Round 4 - HR 

(1 Question)

  • Q1. We are discussing about salary ,shift tyming

Interview Preparation Tips

Interview preparation tips for other job seekers - Just appear for nqt ,then process will be very easy
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
More than 8 weeks
Result
Selected Selected

I appeared for an interview before Jun 2024, where I was asked the following questions.

  • Q1. What projects have you worked on?
  • Q2. What are difficulties you have faced during them
  • Q3. What motivated you to choose Tata Consultancy Services (TCS)?
  • Ans. 

    I chose TCS for its innovation, global presence, and commitment to employee growth and community development.

    • TCS is a leader in technology and innovation, which aligns with my passion for cutting-edge solutions.

    • The company's global presence offers opportunities to work on diverse projects and collaborate with international teams.

    • TCS's commitment to employee development through training programs and mentorship is crucia...

  • Answered by AI
Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in May 2025, where I was asked the following questions.

  • Q1. What is IP
  • Ans. 

    IP stands for Internet Protocol, a set of rules governing data transmission over networks.

    • IP addresses are unique identifiers for devices on a network, e.g., 192.168.1.1.

    • There are two main versions: IPv4 (32-bit) and IPv6 (128-bit).

    • IP is responsible for routing packets of data between devices.

    • It operates at the network layer of the OSI model.

    • IP can be static (fixed) or dynamic (assigned by DHCP).

  • Answered by AI
  • Q2. What is cloudwatch
  • Ans. 

    Amazon CloudWatch is a monitoring and observability service for AWS cloud resources and applications.

    • Provides real-time monitoring of AWS resources like EC2, RDS, and S3.

    • Allows users to set alarms based on metrics, e.g., CPU utilization exceeding a threshold.

    • Offers log management capabilities, enabling users to collect and analyze log files.

    • Integrates with AWS services to automate responses, such as scaling EC2 instanc...

  • Answered by AI
  • Q3. How can add ec2 in Aws
  • Ans. 

    To add an EC2 instance in AWS, use the AWS Management Console or CLI to configure and launch your instance.

    • Log in to the AWS Management Console.

    • Navigate to the EC2 Dashboard.

    • Click on 'Launch Instance' to start the wizard.

    • Choose an Amazon Machine Image (AMI) based on your needs (e.g., Ubuntu, Windows).

    • Select an instance type (e.g., t2.micro for free tier eligibility).

    • Configure instance details like network settings and ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Tcs is best in world
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
More than 8 weeks
Result
Selected Selected

I appeared for an interview in May 2025, where I was asked the following questions.

  • Q1. Array search sort binary sort
  • Q2. Linkedlist tuple python
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in May 2025, where I was asked the following questions.

  • Q1. How crm works
  • Ans. 

    CRM systems manage customer relationships, streamline processes, and enhance communication to improve business relationships.

    • Centralizes customer data for easy access and management.

    • Tracks customer interactions and history for personalized service.

    • Automates marketing campaigns, like email newsletters.

    • Facilitates sales tracking and forecasting, e.g., pipeline management.

    • Enhances customer support with ticketing systems a...

  • Answered by AI
  • Q2. Why you want to join tcs
  • Ans. 

    I want to join TCS for its innovative projects, growth opportunities, and commitment to employee development in a dynamic work environment.

    • TCS is a leader in technology and innovation, allowing me to work on cutting-edge projects.

    • The company's emphasis on continuous learning aligns with my career goals; for example, TCS offers various training programs.

    • TCS has a strong global presence, providing opportunities to collab...

  • Answered by AI

TCS Interview FAQs

How many rounds are there in TCS System Engineer interview for experienced candidates?
TCS interview process for experienced candidates usually has 2-3 rounds. The most common rounds in the TCS interview process for experienced candidates are Technical, HR and Aptitude Test.
What are the top questions asked in TCS System Engineer interview for experienced candidates?

Some of the top questions asked at the TCS System Engineer interview for experienced candidates -

  1. How charging protocol works in electric vehicle and what is purpose of charging...read more
  2. What is the difference between Software Development Life Cycle (SDLC) and Softw...read more
  3. What is basic function of firewall. ...read more
What are the most common questions asked in TCS System Engineer HR round for experienced candidates?

The most common HR questions asked in TCS System Engineer interview are for experienced candidates -

  1. Why are you looking for a chan...read more
  2. What are your salary expectatio...read more
  3. What are your strengths and weakness...read more
How long is the TCS System Engineer interview process?

The duration of TCS System Engineer interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

4.1/5

based on 267 interview experiences

Difficulty level

Easy 30%
Moderate 66%
Hard 4%

Duration

Less than 2 weeks 58%
2-4 weeks 25%
4-6 weeks 9%
6-8 weeks 3%
More than 8 weeks 6%
View more
TCS System Engineer Salary
based on 1.1L salaries
₹3.9 L/yr - ₹8.3 L/yr
At par with the average System Engineer Salary in India
View more details

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based on 13.5k reviews

3.6/5

Rating in categories

3.4

Skill development

3.9

Work-life balance

2.6

Salary

4.6

Job security

3.6

Company culture

2.5

Promotions

3.2

Work satisfaction

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