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TCS Interview Questions, Process, and Tips

Updated 6 Mar 2025

Top TCS Interview Questions and Answers

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TCS Interview Experiences

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10.4k interviews found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Aptitude Test 

Aptitude tests : Duration, topics vary widely.

Round 3 - One-on-one 

(4 Questions)

  • Q1. Can you describe a challenging technical problem you faced and how you solve it ?
  • Ans. 

    Developing a real-time chat application with high scalability and low latency.

    • Designing a distributed architecture to handle a large number of concurrent users.

    • Implementing efficient data synchronization between multiple servers.

    • Optimizing network communication to minimize latency.

    • Ensuring data consistency and reliability in a distributed environment.

  • Answered by AI
  • Q2. How do you stay up to date with emerging technologies and programming language ?
  • Ans. 

    I stay up to date with emerging technologies and programming languages through various methods.

    • I regularly read tech blogs and news websites to stay informed about the latest trends and advancements.

    • I participate in online forums and communities where developers discuss new technologies and share their experiences.

    • I attend conferences, workshops, and webinars to learn from industry experts and network with other profes...

  • Answered by AI
  • Q3. Why did you choose this company for work?
  • Q4. Tell me something about yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Sure, I'd be happy to share some interview advice and questions that could help job seekers prepare better.

So, how to approach a difficult task or problem:

Define the problem: Start by clearly defining the problem or task at hand. What is desired outcome, and what are the specific challenges to need to address?

Brainstorm solutions: Once you understand the problem, brainstorm possible solutions. This may involve gathering information, consulting with others, or simply taking some time to think creatively.

Evaluate options: After generating a list of possible solutions, evaluate each one based on its feasibility, effectiveness, and potential impact.

Develop a plan: Once you have selected the best solution, develop a plan of action that outlines the steps needed to achieve the desired outcome. Make sure to include timelines, responsibilities, and any necessary resources.

Implement and monitor progress: Finally, put your plan into action and monitor progress along the way. Be prepared to adjust your approach if needed, and celebrate milestones and successes as you work towards your goal.

Top TCS Software Engineer Interview Questions and Answers

Q1. Find the Duplicate Number Problem Statement Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Your task is to find and return this d... read more
View answer (9)

Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more
View answer (196)
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.
TCS Interview Questions and Answers for Freshers
illustration image
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
No response

I was interviewed in Sep 2024.

Round 1 - Aptitude Test 

An aptitude test evaluates an individual's potential to excel in a specific area by assessing their strengths and weaknesses in particular abilities.

Round 2 - Aptitude Test 

An assessment that measures an individual's inherent abilities and potential for success in a specific activity.

Round 3 - Coding Test 

A coding test is a programming assessment designed to evaluate a candidate's coding skills. It is a standard component of the technical hiring process for software developers and programmers.

Round 4 - Coding Test 

Assessment that evaluates a candidate's coding skills

Round 5 - Group Discussion 

Group discussion (GD) topics for interviews may cover areas such as business, social issues, and current affairs. GDs serve to evaluate a candidate's communication, leadership, and teamwork abilities.

Round 6 - Assignment 

Discussion assignments are prompts that your teacher may assign to you. By participating in these discussions, you can reflect on your learning, share ideas and opinions, or ask and answer questions. Discussions may require you to respond to individual questions or provide multiple responses to an ongoing conversation.

Interview Preparation Tips

Interview preparation tips for other job seekers - Job seekers can improve their chances by researching the job market, preparing their resume and cover letter, and networking.
Research
Know your goals: Consider your values, strengths, and ideal work environment.
Research the company: Anticipate common interview questions.
Prepare your resume
Tailor your resume: Customize your resume for each job application.
Highlight your skills: Highlight how your skills and experience match the job description.
Use keywords: Use relevant keywords in your resume and cover letter.
Prepare for interviews
Prepare your answers: Use the STAR method to prepare your answers.
Research the company: Anticipate common interview questions.
Network
Expand your professional network: You may find that more people can recommend you to a new position.
Use your professional network: You can use your network for career advice.
Other tips Don't limit your search to online resources, Optimize your LinkedIn profile, Use several job-search websites, Keep your resume up-to-date, and Develop your interview skills.

Top TCS Software Developer Interview Questions and Answers

Q1. Palindromic Numbers Finder Given an integer 'N', your task is to identify all palindromic numbers from 1 to 'N'. These are numbers that read the same way forwards and backwards. Input: The first line provides a single integer 'T', indicatin... read more
View answer (3)

Software Developer Interview Questions asked at other Companies

Q1. Maximum Subarray Sum Problem Statement Given an array of integers, determine the maximum possible sum of any contiguous subarray within the array. Example: Input: array = [34, -50, 42, 14, -5, 86] Output: 137 Explanation: The maximum sum is... read more
View answer (42)
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
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed in Feb 2025.

Round 1 - Technical 

(3 Questions)

  • Q1. Streams api calculate second highest salary
  • Q2. Internal working of hashmap
  • Q3. Pass by value pass by reference concept based output
Round 2 - HR 

(2 Questions)

  • Q1. What is current role
  • Q2. What is expected salary

Top TCS System Engineer Interview Questions and Answers

Q1. Election Winner Determination In an ongoing election between two candidates A and B, there is a queue of voters that includes supporters of A, supporters of B, and neutral voters. Neutral voters have the power to swing the election results ... read more
View answer (9)

System Engineer Interview Questions asked at other Companies

Q1. Election Winner Determination In an ongoing election between two candidates A and B, there is a queue of voters that includes supporters of A, supporters of B, and neutral voters. Neutral voters have the power to swing the election results ... read more
View answer (9)

Get interview-ready with Top TCS Interview Questions

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed before Mar 2024.

Round 1 - Aptitude Test 

It was an off-campus MBA drive, and the questions were related to quantitative and qualitative analysis, English, and business topics.

Round 2 - One-on-one 

(6 Questions)

  • Q1. Introduce yourself.
  • Q2. What is the difference between a primary key and a foreign key?
  • Q3. What are Joins in SQL?
  • Q4. What do you know about generative AI?
  • Q5. What are the 4 P's of marketing?
  • Q6. Why did you do MBA and what you've learnt during your MBA?

Assistant System Analyst Interview Questions asked at other Companies

Q1. How many types in SQL joins and syntax of joins? Difference between joins? What is View and its syntax? What is cursor? What is trigger and types of trigger? How to use joins with an example? What is index and how to create index and syntax... read more
View answer (1)

Jobs at TCS

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Interview Questions & Answers

user image Anonymous

posted on 3 Mar 2025

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I was interviewed in Feb 2025.

Round 1 - Technical 

(2 Questions)

  • Q1. SRE position questions
  • Q2. Networking questions
Round 2 - Technical 

(2 Questions)

  • Q1. Basic Kubernetes questions
  • Q2. Basic networking questions
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)
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)
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected
Round 1 - Technical 

(2 Questions)

  • Q1. Java and String related topic
  • Q2. What is the difference between the equals method and the == operator when comparing Strings?
  • Ans. 

    The equals method compares the content of two strings, while the == operator compares the memory addresses of the strings.

    • equals method checks if two strings have the same content

    • == operator checks if two strings are stored in the same memory location

    • Example: String str1 = new String("hello"); String str2 = new String("hello"); str1.equals(str2) returns true, but str1 == str2 returns false

  • Answered by AI
Round 2 - Aptitude Test 

Speed-related inquiry.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare for Core Java and Java Collections.

Java Back End Developer Interview Questions asked at other Companies

Q1. Design a layered architecture for saving the user data to db. What all annotations to be used on each class and on functions if any?
View answer (1)
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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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