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TCS Interview Questions, Process, and Tips

Updated 11 Mar 2025

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Analyst Interview Questions & Answers

user image Anonymous

posted on 26 Mar 2015

Interview Questionnaire 

16 Questions

  • Q1. Tell me about yourself?
  • Q2. Are you 100% honest ?
  • Q3. What are ur favorite subjects?
  • Q4. What do you mean by Multithreading in java?
  • Ans. 

    Multithreading in Java refers to the concurrent execution of two or more parts of a program for maximum utilization of CPU.

    • Multithreading allows multiple threads to run concurrently within a single program.

    • It improves the performance of the program by utilizing the CPU more efficiently.

    • Java provides built-in support for multithreading through the java.lang.Thread class.

    • Multithreading can be used for tasks such as backg...

  • Answered by AI
  • Q5. What are the different CpU scheduling policies? who does the cpu scheduling?
  • Ans. 

    CPU scheduling policies include FCFS, SJF, Round Robin, Priority, and Multilevel Queue. The operating system does the scheduling.

    • FCFS (First Come First Serve)

    • SJF (Shortest Job First)

    • Round Robin

    • Priority

    • Multilevel Queue

    • Operating system does scheduling

  • Answered by AI
  • Q6. What is Jvm? who manages the thread Jvm or OS?
  • Ans. 

    Jvm is Java Virtual Machine. It manages threads on its own.

    • Jvm is a virtual machine that executes Java bytecode.

    • It provides a runtime environment for Java programs.

    • Jvm manages threads on its own using its own thread scheduler.

    • Jvm is platform-independent and provides a layer of abstraction between the Java code and the underlying operating system.

    • Examples of popular JVM implementations include Oracle's HotSpot and OpenJ

  • Answered by AI
  • Q7. Semaphore?synchronisation in java? Mutex?
  • Q8. Explain tree traversals technique with example??
  • Ans. 

    Tree traversal is a technique to visit all nodes of a tree in a specific order.

    • There are three types of tree traversals: inorder, preorder, and postorder.

    • Inorder traversal visits the left subtree, then the root, and then the right subtree.

    • Preorder traversal visits the root, then the left subtree, and then the right subtree.

    • Postorder traversal visits the left subtree, then the right subtree, and then the root.

    • For exampl...

  • Answered by AI
  • Q9. What is the difference between arraylist and vector? how to traverse a vector?
  • Ans. 

    ArrayList and Vector are both dynamic arrays, but Vector is synchronized and slower. Traversing a Vector is similar to an ArrayList.

    • ArrayList is not synchronized, while Vector is synchronized.

    • ArrayList is faster than Vector, but Vector is thread-safe.

    • To traverse a Vector, we can use a for loop or an iterator, similar to an ArrayList.

    • Example: Vector v = new Vector<>(); for(String s : v) { //do something }

  • Answered by AI
  • Q10. Why TCS?
  • Ans. 

    TCS is a leading global IT services company with a strong reputation and diverse opportunities for growth.

    • TCS has a strong reputation in the IT industry

    • TCS offers diverse opportunities for growth and learning

    • TCS has a global presence and works with top clients

    • TCS has a strong focus on innovation and technology

    • TCS provides a supportive and inclusive work environment

  • Answered by AI
  • Q11. Any five tata group companies other than TCS?
  • Q12. What is the Tata‘s product used in every house?
  • Ans. 

    Tata Salt is the product used in every house.

    • Tata Salt is a brand of salt produced by Tata Chemicals.

    • It is the market leader in India with a 27% market share.

    • Tata Salt has been fortified with iodine to help address iodine deficiency in India.

    • It is available in various sizes and packaging options to suit different needs.

    • Tata Salt has won several awards for its quality and innovation.

  • Answered by AI
  • Q13. What‘s your hobby and passion?
  • Ans. 

    My hobby and passion is photography.

    • I love capturing moments and telling stories through my photographs.

    • I enjoy exploring different techniques and experimenting with composition.

    • Photography allows me to express my creativity and view the world from unique perspectives.

    • I have participated in several photography competitions and my work has been featured in local exhibitions.

    • Some of my favorite subjects to photograph are

  • Answered by AI
  • Q14. In your views who should be the captain of Indian cricket team?
  • Q15. What are the qualities of a good leader ?
  • Ans. 

    A good leader possesses qualities such as strong communication skills, empathy, integrity, and the ability to inspire and motivate others.

    • Strong communication skills: A good leader is able to effectively convey their ideas and instructions to their team members.

    • Empathy: A good leader understands and considers the feelings and perspectives of their team members, fostering a positive and supportive work environment.

    • Integ...

  • Answered by AI
  • Q16. Worst situation you have ever faced in your life ?
  • Ans. 

    Being stranded in a foreign country with no money or means to communicate

    • Lost my wallet with all my money and identification

    • Couldn't speak the local language to ask for help

    • Had to rely on the kindness of strangers for assistance

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were no technical questions. Only quantitative questions was there. Questions were not very tough.
Tips: Just have a look at RS Aggarwal book or any other aptitude book , you will easily get through it.
Duration: 80 minutes

Round: Other Interview
Experience: There were different panels , having three persons in each panel. It was basically HR , TECh, MR interview altogether. Even some of the students were called for one to one tech interview and later they were called for hr and mr round.

Skills: JAVA, C/C++
College Name: NA

Skills evaluated in this interview

Top TCS Analyst Interview Questions and Answers

Q1. How do you create a form in React JS and monitor the value changes?
View answer (2)

Analyst Interview Questions asked at other Companies

Q1. N-th Fibonacci Number Problem Statement Given an integer ‘N’, your task is to find and return the N’th Fibonacci number using matrix exponentiation. Since the answer can be very large, return the answer modulo 10^9 + 7. Formula: F(n) = F(n-... read more
View answer (1)
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. Can you describe the end-to-end process you follow after receiving requirements from the Product Owner?
  • Ans. 

    I follow a structured process to ensure requirements are effectively translated into actionable tasks for the team.

    • 1. Requirement Analysis: Review and clarify requirements with the Product Owner to ensure understanding.

    • 2. Backlog Refinement: Prioritize and break down requirements into user stories and tasks in the product backlog.

    • 3. Sprint Planning: Collaborate with the team to estimate tasks and plan the sprint based ...

  • Answered by AI
  • Q2. How do you ensure that the quality of the Sprint demo is maintained?
  • Ans. 

    Maintaining quality in Sprint demos involves preparation, stakeholder engagement, and continuous feedback.

    • Conduct thorough sprint reviews to ensure all features are demoed effectively.

    • Engage stakeholders early to gather feedback and adjust the demo accordingly.

    • Use real user scenarios during the demo to showcase functionality.

    • Prepare a clear agenda and objectives for the demo to keep it focused.

    • Incorporate feedback from

  • Answered by AI
Round 2 - One-on-one 

(3 Questions)

  • Q1. Tell me the typical day of a Scrum Master
  • Ans. 

    A Scrum Master's day involves facilitating meetings, coaching teams, and removing obstacles to ensure smooth project delivery.

    • Start the day with a Daily Stand-up meeting to discuss progress and blockers.

    • Facilitate Sprint Planning sessions to define the scope of work for the upcoming sprint.

    • Conduct Sprint Reviews to showcase completed work and gather feedback from stakeholders.

    • Hold Retrospectives to reflect on the team'...

  • Answered by AI
  • Q2. What is the process you follow during your PI (Program Increment) planning?
  • Ans. 

    During PI planning, I facilitate collaboration, align teams, and prioritize work for the upcoming increment.

    • Preparation: Gather input from stakeholders and teams to define objectives and features.

    • Team Breakouts: Facilitate sessions where teams estimate and plan their work for the increment.

    • Dependency Management: Identify and address dependencies between teams to ensure smooth execution.

    • Review and Adjust: Present plans ...

  • Answered by AI
  • Q3. Can you describe any recent issues or conflicts you have faced and how you resolved them?
  • Ans. 

    Faced a conflict over resource allocation in a project, resolved through open communication and collaborative planning.

    • Identified the conflict during a sprint planning meeting when team members expressed concerns over resource availability.

    • Facilitated a discussion with stakeholders to understand their priorities and constraints.

    • Proposed a reallocation of tasks based on team members' strengths and current workloads, ens...

  • Answered by AI

Project Manager Scrum Master Interview Questions asked at other Companies

Q1. What is agile? How you trained your team for agile development? What action item came out of sprint retro and how you handled? What techniques you follow in estimation? Who are stake holders of PI planning?
View answer (1)
TCS Interview Questions and Answers for Freshers
illustration image
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - Technical 

(3 Questions)

  • Q1. Why Angular is used and What is SPA.
  • Q2. RxJs Operators like mergeMap, switchMap, concatMap and NgRx related questions.
  • Q3. Basic with little advanced questions related to angular.
Round 2 - Behavioral 

(1 Question)

  • Q1. What is day to day activities, what process you're following.

Interview Preparation Tips

Interview preparation tips for other job seekers - Easy interview basic questions and few advanced topics.

Top TCS Senior Software Engineer Interview Questions and Answers

Q1. What is spring boot , annotations used in spring boot? Validation done in spring boot
View answer (1)

Senior Software Engineer Interview Questions asked at other Companies

Q1. Tell me about yourself. What technology are you using? What is a Collection? What are the different types of collection there? What is the difference between ArrayList and LinkedList What are the basic building blocks of Stream operators, s... read more
View answer (2)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Jan 2025.

Round 1 - Technical 

(14 Questions)

  • Q1. Queries on joins using inner join, left join, right join, outer join
  • Q2. What are the definitions of case and decode, what are the differences between them, and can you explain the logic for each?
  • Ans. 

    Case and decode are conditional expressions in PL/SQL used for data manipulation.

    • CASE is used for conditional logic in SQL statements, while DECODE is used for conditional logic in SELECT statements.

    • CASE is more flexible and can handle multiple conditions, while DECODE is limited to one condition.

    • CASE can be used in both SQL and PL/SQL, while DECODE is specific to SQL.

    • Example of CASE: SELECT CASE WHEN condition1 THEN r...

  • Answered by AI
  • Q3. What are the primary key and foreign key in database design, and can you provide examples of each?
  • Ans. 

    Primary key uniquely identifies each record in a table, while foreign key establishes a link between two tables.

    • Primary key ensures uniqueness and cannot have null values

    • Foreign key establishes a relationship between tables based on the primary key of another table

    • Example of primary key: EmployeeID in an Employee table

    • Example of foreign key: DepartmentID in an Employee table linking to DepartmentID in a Department tabl

  • Answered by AI
  • Q4. What are the differences between Rank and Dense Rank in SQL?
  • Ans. 

    Rank assigns unique ranks to each distinct row, while Dense Rank assigns consecutive ranks without gaps.

    • Rank may have gaps in the ranking sequence, while Dense Rank does not.

    • Rank assigns the same rank to rows with the same values, while Dense Rank assigns different ranks.

    • Rank function is non-consecutive, while Dense Rank function is consecutive.

  • Answered by AI
  • Q5. What is the difference between procedures and functions?
  • Ans. 

    Procedures are used to perform an action, while functions return a value.

    • Procedures do not return a value, while functions do.

    • Functions can be called from SQL queries, while procedures cannot.

    • Functions must return a value, while procedures do not necessarily have to.

  • Answered by AI
  • Q6. Is it possible to use a package body without a package specification?
  • Ans. 

    No, a package body cannot be used without a package specification.

    • A package body must always be associated with a package specification.

    • The package specification defines the public interface of the package, while the package body contains the implementation details.

    • Attempting to use a package body without a corresponding package specification will result in compilation errors.

  • Answered by AI
  • Q7. What is a SQL query that can be used to find duplicate values in a database?
  • Ans. 

    Use a SQL query with GROUP BY and HAVING clause to find duplicate values in a database.

    • Use GROUP BY clause to group the values that are duplicated.

    • Use HAVING clause to filter out the groups that have more than one occurrence.

    • Example: SELECT column_name, COUNT(*) FROM table_name GROUP BY column_name HAVING COUNT(*) > 1;

  • Answered by AI
  • Q8. Queries using group by and having clause
  • Ans. 

    Group by and having clause are used together to filter groups based on specified conditions.

    • Group by clause is used to group rows that have the same values into summary rows.

    • Having clause is used to filter groups based on specified conditions.

    • Example: SELECT department, AVG(salary) FROM employees GROUP BY department HAVING AVG(salary) > 5000;

  • Answered by AI
  • Q9. What are the definitions of the Substr and Instr functions?
  • Ans. 

    Substr function extracts a substring from a string, while Instr function returns the position of a substring within a string.

    • Substr function syntax: SUBSTR(string, start_position, length)

    • Example: SUBSTR('Hello World', 7, 5) will return 'World'

    • Instr function syntax: INSTR(string, substring)

    • Example: INSTR('Hello World', 'World') will return 7

  • Answered by AI
  • Q10. What is the process for writing a SQL query that includes a subquery?
  • Ans. 

    Writing a SQL query with a subquery involves nesting one query inside another to retrieve specific data.

    • Start by writing the main query that will retrieve the primary data

    • Identify the criteria for the subquery to filter the results

    • Enclose the subquery within parentheses and use it in the WHERE or FROM clause of the main query

    • Ensure that the subquery returns a single value or a single column result

  • Answered by AI
  • Q11. What is the difference between char, varchar, and varchar2 data types?
  • Ans. 

    Char is fixed length, varchar is variable length with max 4000 bytes, varchar2 is variable length with max 32767 bytes.

    • Char is fixed length and always right-padded with spaces, while varchar and varchar2 are variable length.

    • Varchar can store up to 4000 bytes of data, while varchar2 can store up to 32767 bytes.

    • Char is less efficient in terms of storage compared to varchar and varchar2.

  • Answered by AI
  • Q12. Queries using Trunc and round
  • Q13. Is it possible to combine two tables with differing data and columns without utilizing joins?
  • Ans. 

    No, it is not possible to combine two tables with differing data and columns without utilizing joins.

    • Joins are necessary to combine tables based on a common column or key.

    • Different data and columns require a join to match and merge the data properly.

    • Examples of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

  • Answered by AI
  • Q14. Is it possible to update data in a view?
  • Ans. 

    Yes, it is possible to update data in a view using INSTEAD OF triggers.

    • Views are virtual tables that display data from one or more tables.

    • By using INSTEAD OF triggers, you can update data in a view by specifying the logic to handle the update operation.

    • The trigger intercepts the update operation on the view and executes the specified logic to update the underlying tables.

    • For example, you can create an INSTEAD OF trigge...

  • Answered by AI
Round 2 - Behavioral 

(6 Questions)

  • Q1. Can you describe yourself and provide details about your project, including the brief questions that were asked about it?
  • Q2. Why TCS?
  • Ans. 

    TCS is a global IT services company known for its innovative solutions and commitment to employee growth.

    • TCS has a strong reputation in the IT industry for delivering high-quality services.

    • TCS offers opportunities for professional growth and development through training programs and career advancement.

    • TCS has a diverse and inclusive work culture that values teamwork and collaboration.

  • Answered by AI
  • Q3. What is a dynamic cursor in database management?
  • Ans. 

    A dynamic cursor in database management allows for the execution of different SQL queries at runtime.

    • Dynamic cursors are used when the SQL query to be executed is not known until runtime.

    • They allow for flexibility in querying the database based on user input or other conditions.

    • Dynamic cursors can be used to handle varying result sets or conditions in a more efficient manner.

    • Example: Using a dynamic cursor to search fo...

  • Answered by AI
  • Q4. Did you perform performance tuning, and if so, what steps did you take?
  • Ans. 

    Yes, I have performed performance tuning by identifying bottlenecks and optimizing queries.

    • Identified slow queries using tools like SQL Trace, Explain Plan, and AWR reports.

    • Optimized queries by adding indexes, rewriting SQL statements, and reducing unnecessary data retrieval.

    • Tuned PL/SQL code by using bulk processing, minimizing context switches, and optimizing loops.

    • Utilized database features like partitioning and mat

  • Answered by AI
  • Q5. What is the definition of a package, and is it possible to use a package body without a package specification?
  • Ans. 

    A package in PL/SQL is a collection of related procedures, functions, variables, and other constructs.

    • A package consists of two parts: package specification and package body.

    • The package specification defines the public interface of the package, including declarations of variables, constants, cursors, procedures, and functions.

    • The package body contains the actual implementation of the procedures and functions declared i...

  • Answered by AI
  • Q6. I got more questions from my project related
Round 3 - HR 

(6 Questions)

  • Q1. What are your reasons for wanting to join TCS?
  • Ans. 

    I am excited about the opportunity to work with a global leader like TCS and contribute to innovative projects.

    • TCS is a renowned global company with a strong reputation in the IT industry

    • I am impressed by TCS's commitment to innovation and cutting-edge technology

    • I believe TCS offers great opportunities for professional growth and development

    • I am excited about the chance to work on diverse and challenging projects at TC

  • Answered by AI
  • Q2. What is your current salary package?
  • Ans. 

    I prefer to discuss my salary expectations based on the responsibilities and requirements of the position.

    • Focus on discussing salary expectations based on the job responsibilities and requirements.

    • Avoid disclosing specific current salary package.

    • Emphasize the importance of fair compensation based on market rates and skills.

    • Provide examples of successful projects or achievements that demonstrate your value.

    • Discuss oppor...

  • Answered by AI
  • Q3. What is your expected salary package?
  • Ans. 

    I am looking for a competitive salary package based on my experience and skills.

    • I am open to discussing salary based on the responsibilities and requirements of the role.

    • I have researched the average salary range for Plsql Developers in this location.

    • I am looking for a package that includes benefits such as healthcare, retirement plans, and professional development opportunities.

  • Answered by AI
  • Q4. Are you comfortable with shift work?
  • Ans. 

    Yes, I am comfortable with shift work and have experience working various shifts.

    • I have previous experience working different shifts in my current/previous roles.

    • I am flexible with my schedule and can easily adapt to changing shift patterns.

    • I understand the importance of shift work in ensuring 24/7 coverage for critical systems.

  • Answered by AI
  • Q5. Are you ok with any location
  • Ans. 

    Yes, I am open to any location for the Plsql Developer position.

    • I am willing to relocate for the right opportunity

    • I am open to working in different cities or countries

    • I am flexible with travel requirements for the job

  • Answered by AI
  • Q6. Holding any other offers in hand

Top TCS Plsql Developer Interview Questions and Answers

Q1. What is procedure in plsql and it's syntax and difference between procedure and function?
View answer (7)

Plsql Developer Interview Questions asked at other Companies

Q1. What is procedure in plsql and it's syntax and difference between procedure and function?
View answer (7)

TCS interview questions for popular designations

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

I was interviewed in Feb 2025.

Round 1 - Technical 

(3 Questions)

  • Q1. Individuals with a strongIndividuals with a strong interest interest in in joining an Indian private multinational corporation, particularly Tata Consultancy joining an Indian private multinational corpora...
  • Q2. Current job role and questions related to the same - DNS, SSL, HTTP
  • Q3. Certification plans for coming year were asked
Round 2 - Technical 

(1 Question)

  • Q1. After much confusion between the coordinators, most of the interviewed participants were told to leave and wait for the next phase.

Interview Preparation Tips

Interview preparation tips for other job seekers - Individuals with a strong interest in joining an Indian private multinational corporation, particularly Tata Consultancy Services (TCS), and who are looking to establish a stable career path should actively participate in the large-scale interview processes being conducted regularly.

Get interview-ready with Top TCS Interview Questions

Interview experience
1
Bad
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
No response

I was interviewed in Feb 2025.

Round 1 - One-on-one 

(1 Question)

  • Q1. Face to Face interview, they will test your coding skills by writing on the paper. Your interview time will be more than 30 minutes

Interview Preparation Tips

Interview preparation tips for other job seekers - I went to the interview 30 minute before the scheduled time. You have to wait for more time, they will call the person one by one, once you submitted the resume.
When you attend the interview on Saturday you cannot go cannot get lunch in cafeteria. Be prepared finish dinner before the interview starts.
I waited for half day, till they didnt conduct the interview for me.
At last they told you will get a call from the technical team regarding the interview. Till now i didnt get the call.

The only thing in face to face interview is to give your resume and sit for the long time and do mediation.

PHP Programmer Interview Questions asked at other Companies

Q1. How to connect to PHP to SQL ?
View answer (1)

Jobs at TCS

View all
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - HR 

(3 Questions)

  • Q1. They communicate with customer through various channels like via phone email or chat aiming
  • Q2. I will write notes on interview
  • Q3. My personal with a Disability. I m deaf & hearing Impairment

Interview Preparation Tips

Interview preparation tips for other job seekers - Dear Sir, Ma’am.

I am seeking challenging roles as a Project Executive, General claims Insurance, Property and Casualty Insurance, Customer Support Executive (Non-Voice), Customer Support Advisor (Non-Voice), Customer Support Associate (Non-Voice), Data Analytics Report Specialist, Microsoft office, Back Office Executive, and Data Entry Executive, Computer Speed. With 7 Years of work experience, I am a motivated and detail-oriented professional dedicated to achieving results and adding value to organizational objectives. As an individual with a Deaf & Hearing Impairment (Disability-PWD), I am eager for equal opportunities to showcase my skills and expertise.

I would appreciate the opportunity to discuss how my experience and abilities align with your organization's needs.

Thanks & Regards
sohan panchgam

Customer Support Executive Interview Questions asked at other Companies

Q1. Understanding customer problems,whT i know about BPO nd how they work,how i will handle a difficult nd angry customer,i can satisfied my client.
View answer (21)
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Dec 2024.

Round 1 - Technical 

(22 Questions)

  • Q1. API Gateway implementation
  • Ans. 

    API Gateway implementation is a centralized service that routes, manages, and secures API calls.

    • API Gateway acts as a single entry point for all API calls

    • It can handle authentication, rate limiting, caching, and request/response transformations

    • Examples include AWS API Gateway, Apigee, Kong

  • Answered by AI
  • Q2. Circuit breaker implementation
  • Ans. 

    Circuit breaker is a design pattern used to prevent system overload by temporarily stopping requests to a failing service.

    • Circuit breaker monitors requests to a service and opens when the service fails repeatedly.

    • It helps prevent cascading failures and allows the system to gracefully degrade.

    • Once the circuit breaker is open, it can periodically check if the service has recovered before allowing requests again.

  • Answered by AI
  • Q3. What is deadlock? How to avoid it?
  • Ans. 

    Deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.

    • Avoid circular wait by ensuring processes request resources in the same order.

    • Prevent hold and wait by requiring processes to request all needed resources at once.

    • Implement a timeout mechanism to break potential deadlocks.

    • Use resource allocation graphs to detect and prevent deadlocks.

    • ...

  • Answered by AI
  • Q4. Explain equals() method
  • Ans. 

    The equals() method is used to compare the contents of two objects for equality.

    • The equals() method is a method of the Object class in Java.

    • It is used to compare the contents of two objects for equality.

    • The default implementation of equals() in the Object class compares memory addresses, so it is often overridden in custom classes to compare content.

    • Example: String class overrides equals() method to compare the content

  • Answered by AI
  • Q5. How mongodb was integrated in your application?
  • Ans. 

    MongoDB was integrated in the application by using the official Java driver and configuring connection settings.

    • Used the official MongoDB Java driver to interact with the database

    • Configured connection settings such as host, port, database name, and authentication credentials

    • Implemented CRUD operations using MongoDB Java driver methods

    • Utilized MongoDB aggregation framework for complex queries

  • Answered by AI
  • Q6. What is hibernate?
  • Ans. 

    Hibernate is an open-source Java framework that simplifies the development of database interactions in Java applications.

    • Hibernate is an Object-Relational Mapping (ORM) tool that maps Java objects to database tables.

    • It provides a way to perform database operations using Java objects instead of writing SQL queries.

    • Hibernate handles the mapping of Java classes to database tables and vice versa, as well as the generation ...

  • Answered by AI
  • Q7. Runnable vs Callable interface
  • Ans. 

    Runnable is a functional interface with a single run() method, while Callable is a functional interface with a single call() method.

    • Runnable is used for tasks that do not return a result, while Callable is used for tasks that return a result.

    • Callable can throw checked exceptions, while Runnable cannot.

    • Callable returns a Future object, which can be used to retrieve the result of the computation.

    • Example: Runnable - execu...

  • Answered by AI
  • Q8. Which type of data is returned by Callable interface?
  • Ans. 

    The Callable interface in Java returns a Future object.

    • Callable interface returns a Future object which represents the result of a computation that may not be available yet.

    • The Future object can be used to retrieve the result of the computation, check if it is done, or cancel the computation.

    • Example: Callable<Integer> task = () -> { return 42; }

  • Answered by AI
  • Q9. HashMap internal working
  • Q10. Concurrent HashMap internal working
  • Q11. How to monitor health of your application?
  • Ans. 

    Monitor application health using metrics, logs, alerts, and performance monitoring tools.

    • Use monitoring tools like Prometheus, Grafana, or New Relic to track key metrics such as CPU usage, memory usage, response times, and error rates.

    • Implement logging to record important events and errors in your application. Use tools like ELK stack (Elasticsearch, Logstash, Kibana) for log analysis.

    • Set up alerts to notify you of any...

  • Answered by AI
  • Q12. How to call an API in a Microservice architecture?
  • Ans. 

    To call an API in a Microservice architecture, use HTTP requests or messaging protocols like gRPC.

    • Use HTTP requests to communicate between microservices

    • Implement RESTful APIs for easy integration

    • Leverage messaging protocols like gRPC for efficient communication

    • Consider using service discovery mechanisms for dynamic API calls

  • Answered by AI
  • Q13. Explain Profiles
  • Ans. 

    Profiles in Java are configurations that define the capabilities of a Java platform.

    • Profiles allow developers to target specific types of devices or applications.

    • They help in reducing the size of the Java runtime environment by including only the necessary APIs.

    • Examples include Java SE Embedded Profile for embedded devices and Java SE Compact Profile for resource-constrained environments.

  • Answered by AI
  • Q14. What is OpenFeign, and how is it used in microservices architecture?
  • Ans. 

    OpenFeign is a declarative web service client used to simplify the process of making HTTP requests in microservices architecture.

    • OpenFeign allows developers to define RESTful web services as interfaces and automatically generate the necessary implementation code.

    • It integrates seamlessly with Spring Cloud and other microservices frameworks to facilitate communication between services.

    • OpenFeign supports features like loa...

  • Answered by AI
  • Q15. What is the implementation process for service registry and discovery?
  • Ans. 

    Service registry and discovery involves registering services and allowing clients to discover and connect to them.

    • Implement a service registry where services can register themselves with metadata

    • Use a service discovery mechanism for clients to find and connect to services

    • Implement health checks to ensure services are available and healthy

    • Use a load balancer to distribute traffic among multiple instances of a service

  • Answered by AI
  • Q16. What are Spring boot actuators?
  • Ans. 

    Spring Boot Actuators are built-in tools that provide insight into the running application.

    • Actuators expose various endpoints to monitor and manage the application.

    • They can be used to check health, metrics, environment details, and more.

    • Examples include /actuator/health, /actuator/metrics, and /actuator/env.

  • Answered by AI
  • Q17. Synchronous vs Asynchronous communication
  • Ans. 

    Synchronous communication is blocking, while asynchronous communication is non-blocking.

    • Synchronous communication waits for a response before continuing, while asynchronous communication does not wait.

    • Examples of synchronous communication include traditional function calls, while examples of asynchronous communication include callbacks and promises.

    • Synchronous communication can lead to performance issues if there are d...

  • Answered by AI
  • Q18. Explain Synchronized keyword
  • Ans. 

    Synchronized keyword is used in Java to control access to shared resources by multiple threads.

    • Synchronized keyword can be applied to methods or code blocks to ensure only one thread can access the synchronized code at a time.

    • It prevents race conditions and ensures thread safety by creating a lock on the object or class.

    • Example: synchronized void myMethod() { // synchronized code block }

  • Answered by AI
  • Q19. What are the consequences of excessively using synchronized blocks and methods in Java?
  • Ans. 

    Excessive use of synchronized blocks and methods in Java can lead to performance issues and potential deadlocks.

    • Decreased performance due to increased contention for locks

    • Potential deadlocks if multiple threads are waiting for each other to release locks

    • Increased complexity and difficulty in debugging and maintaining code

    • Use synchronized sparingly and consider alternatives like ConcurrentHashMap or Lock interface

  • Answered by AI
  • Q20. How can you determine the number of threads needed for your application?
  • Ans. 

    The number of threads needed for an application can be determined based on factors like the type of tasks, hardware resources, and performance requirements.

    • Consider the type of tasks your application needs to perform - CPU-bound tasks may benefit from more threads, while I/O-bound tasks may not.

    • Take into account the hardware resources available - more threads may be beneficial on a multi-core processor compared to a si...

  • Answered by AI
  • Q21. Explain Executor framework
  • Ans. 

    Executor framework is a framework in Java that provides a way to manage and execute tasks asynchronously.

    • Allows for managing thread execution in a more efficient way

    • Provides a way to decouple task submission from task execution

    • Supports various types of executors like ThreadPoolExecutor and ScheduledExecutorService

    • Helps in handling tasks concurrently and asynchronously

  • Answered by AI
  • Q22. Explain BlockingQueue
  • Ans. 

    BlockingQueue is an interface in Java that represents a queue which supports operations that wait for the queue to become non-empty when retrieving an element and wait for space to become available in the queue when adding an element.

    • BlockingQueue is part of the java.util.concurrent package.

    • It is used for implementing producer-consumer scenarios where multiple threads are involved.

    • Methods like put() and take() are used...

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. Why did you leave your previous company?
  • Ans. 

    Seeking new challenges and opportunities for growth.

    • Desire for career advancement

    • Looking for new challenges

    • Seeking better work-life balance

    • Company restructuring or downsizing

    • Relocation to a new area

  • Answered by AI
  • Q2. Other basic questions asked regarding the relevant skills and technologies I have worked with.

Skills evaluated in this interview

Top TCS Java Developer Interview Questions and Answers

Q1. what are the difference between abstract class and interface, and throw and throws, and why we use throws?? Why String is Immutable?
View answer (6)

Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more
View answer (3)

IT Analyst Interview Questions & Answers

user image Aishwarya Pimple

posted on 21 Feb 2025

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected
Round 1 - Aptitude Test 

I could relate to my knowledge.

Round 2 - Technical 

(3 Questions)

  • Q1. What are the Object-Oriented Programming (OOP) concepts in Java?
  • Ans. 

    OOP concepts in Java include classes, objects, inheritance, polymorphism, encapsulation, and abstraction.

    • Classes: Blueprint for creating objects.

    • Objects: Instances of classes that encapsulate data and behavior.

    • Inheritance: Allows a class to inherit properties and methods from another class.

    • Polymorphism: Ability to present the same interface for different data types.

    • Encapsulation: Bundling data and methods that operate ...

  • Answered by AI
  • Q2. Can you explain what you have learned in Java?
  • Ans. 

    I have learned Java programming language extensively, including object-oriented programming concepts, data structures, and algorithms.

    • Extensive knowledge of Java syntax and features

    • Understanding of object-oriented programming concepts like inheritance, polymorphism, and encapsulation

    • Experience with data structures such as arrays, linked lists, stacks, and queues

    • Knowledge of algorithms like sorting, searching, and graph...

  • Answered by AI
  • Q3. Can you explain what all knowledge do you have in java
  • Ans. 

    I have extensive knowledge in Java programming language, including core concepts, data structures, multithreading, and design patterns.

    • Strong understanding of core Java concepts such as OOP, inheritance, polymorphism, and encapsulation

    • Experience with data structures and algorithms in Java, including arrays, linked lists, trees, and graphs

    • Proficient in multithreading and concurrency in Java, including synchronization an...

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. Are you willing to relocate?
  • Ans. 

    Yes, I am open to relocating for the right opportunity.

    • I am open to relocating for the right job opportunity

    • I am willing to move to a new location if required for the role

    • I am flexible and adaptable to new environments

  • Answered by AI
  • Q2. How would you handle a situation in which you receive no support from your team on a project?
  • Ans. 

    I would address the issue by communicating with my team, seeking feedback, and finding alternative solutions.

    • Initiate a meeting with the team to discuss the lack of support and understand their perspectives

    • Seek feedback on how to improve collaboration and address any concerns

    • Explore alternative solutions or resources to move the project forward

    • Maintain open communication and transparency throughout the process

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be honest and take the plunge.

Top TCS IT Analyst Interview Questions and Answers

Q1. 1. What is interface how to use? 2. Tell me a small example for interface? 3. How to managing the Error Logging system at your application 4. How you implement Security at your application 5. What are the Joins why we use joins in sql serve... read more
View answer (1)

IT Analyst Interview Questions asked at other Companies

Q1. 1. What is interface how to use? 2. Tell me a small example for interface? 3. How to managing the Error Logging system at your application 4. How you implement Security at your application 5. What are the Joins why we use joins in sql serve... read more
View answer (1)

Developer Interview Questions & Answers

user image Anonymous

posted on 11 Mar 2025

Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. Current jobs done in organization
  • Q2. If job has abended what scenario will be done

Interview Preparation Tips

Interview preparation tips for other job seekers - Speak confidently
Dont be afraid
If you dont know answer to the question try to manage and tell will learn

Top TCS Developer Interview Questions and Answers

Q1. How setup network in lab anf what equipment u required?
View answer (2)

Developer Interview Questions asked at other Companies

Q1. Which programming language do you use regular in work
View answer (2)
Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected
Round 1 - Technical 

(5 Questions)

  • Q1. React Life cycle
  • Q2. What React hooks have you utilized in your projects?
  • Ans. 

    I have utilized useState, useEffect, useContext, and useRef hooks in my projects.

    • useState - for managing state in functional components

    • useEffect - for handling side effects in functional components

    • useContext - for accessing context in functional components

    • useRef - for accessing DOM elements or storing mutable values

  • Answered by AI
  • Q3. What is Redux, and what are the differences between Redux and Context?
  • Ans. 

    Redux is a predictable state container for JavaScript apps. It helps manage the state of an application in a centralized way.

    • Redux is a state management library commonly used with React to manage the state of an application.

    • It follows a unidirectional data flow pattern, where the state is stored in a single store and changes are made through actions and reducers.

    • Redux allows for a more structured way of managing state ...

  • Answered by AI
  • Q4. What is the difference between visibility: hidden and display: none in CSS?
  • Ans. 

    visibility: hidden hides an element but still takes up space, while display: none hides an element and removes it from the flow of the document.

    • visibility: hidden hides the element but it still occupies space on the page

    • display: none hides the element and removes it from the document flow

    • visibility: hidden elements are still rendered, just not visible

    • display: none elements are not rendered at all

  • Answered by AI
  • Q5. What are JavaScript closures, the temporal dead zone (TDZ), hoisting, and the JavaScript engine?
  • Ans. 

    JavaScript closures, TDZ, hoisting, and the JavaScript engine are key concepts in understanding how JavaScript works.

    • JavaScript closures are functions that have access to variables from their outer scope even after the outer function has finished executing.

    • Temporal Dead Zone (TDZ) is the period between entering a scope and the variable being declared where accessing the variable results in a ReferenceError.

    • Hoisting is ...

  • Answered by AI
Round 2 - Coding Test 

Identify the duplicate character in the string.

Top TCS Front end Developer Interview Questions and Answers

Q1. Allocate Books Problem Statement Given an array of integers arr, where arr[i] represents the number of pages in the i-th book, and an integer m representing the number of students, allocate all the books in such a way that: Each student ge... read more
View answer (1)

Front end Developer Interview Questions asked at other Companies

Q1. Non-Decreasing Array Problem Statement Given an integer array ARR of size N, determine if it can be transformed into a non-decreasing array by modifying at most one element. An array is defined as non-decreasing if ARR[i] &lt;= ARR[i + 1] f... read more
View answer (3)
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TCS Interview FAQs

How many rounds are there in TCS interview?
TCS interview process usually has 2-3 rounds. The most common rounds in the TCS interview process are Technical, HR and Aptitude Test.
How to prepare for TCS interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at TCS. The most common topics and skills that interviewers at TCS expect are Java, Spring Boot, Microservices, SQL and Python.
What are the top questions asked in TCS interview?

Some of the top questions asked at the TCS interview -

  1. What is FDS , did you create and if create tell me the requireme...read more
  2. How to display multiple screen in one lay...read more
  3. What is the use of constructor? When it will be cal...read more
How long is the TCS interview process?

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

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