20+ TCS Interview Questions and Answers

AWS is used for cloud computing, storage, and database management.

• AWS provides scalable and cost-effective solutions for businesses and organizations.

• It is used for hosting websites, running applications, and storing data.

• AWS offers a wide range of services including EC2, S3, RDS, and Lambda.

• It is used by companies like Netflix, Airbnb, and NASA.

• AWS is also used for disaster recovery, backup, and data analytics.

Yes, I have hands-on experience with various CRMs and tools to extract data and gain insights.

• I have worked extensively with Salesforce CRM and have experience in creating custom reports and dashboards to analyze data.

• I have also used tools like Google Analytics and Mixpanel to track website and app usage and identify user behavior patterns.

• In addition, I have experience with data visualization tools like Tableau and Power BI to create interactive dashboards and reports.

• I am ...read more

Maintaining a healthy relationship with developers is crucial for successful product design.

• Establish clear communication channels and set expectations from the beginning

• Respect their expertise and involve them in the design process

• Be open to feedback and willing to compromise

• Celebrate successes together and learn from failures

• Regularly check in and maintain a positive attitude

To make a product more accessible, consider factors such as user diversity, usability, and assistive technology.

• Ensure compatibility with assistive technologies such as screen readers and voice recognition software.

• Design with user diversity in mind, including those with disabilities, different languages, and varying levels of technical proficiency.

• Provide clear and concise instructions and feedback to improve usability.

• Use high contrast colors and clear typography to improve...read more

Qualities that set you apart and make you amazing in your role.

• Strong leadership skills

• Excellent communication abilities

• Proven track record of exceeding sales targets

• Strategic thinker with ability to analyze market trends

• Ability to build and maintain strong relationships with clients

• Innovative problem solver

I generated varying amounts of revenue on a monthly basis.

• The revenue generated each month fluctuated.

• I can provide specific examples if needed.

• The revenue growth was influenced by various factors such as market conditions and customer demand.

Interpreted languages are executed directly, while compiled languages are translated into machine code before execution.

• Interpreted languages are easier to debug and modify.

• Compiled languages are faster and more efficient.

• Examples of interpreted languages include Python and JavaScript.

• Examples of compiled languages include C++ and Java.

Compare 2 nested JSON objects and find the property/subproperty which is the difference

• Parse both JSON objects and compare each property/subproperty recursively

• Use a recursive function to traverse the JSON objects

• When a difference is found, store the property/subproperty and its value

• Return the stored differences as a JSON object

AWS is a cloud computing platform that provides a wide range of services for computing, storage, and databases.

• AWS stands for Amazon Web Services

• It offers services like EC2, S3, RDS, Lambda, etc.

• AWS provides a pay-as-you-go pricing model

• It has a global infrastructure with data centers in multiple regions

• AWS offers security and compliance features like IAM, KMS, and CloudTrail

To ensure alignment towards requirements, I will prioritize clear communication, thorough analysis, and regular feedback.

• Regularly communicate with stakeholders to clarify requirements and expectations

• Conduct thorough analysis of requirements to identify potential issues or gaps

• Seek feedback from team members and stakeholders throughout the development process

• Use agile methodologies to adapt to changing requirements and prioritize tasks accordingly

I would communicate the limitations to the client and explore alternative solutions.

• Understand the root cause of the limitation

• Communicate the limitation to the client clearly and transparently

• Explore alternative solutions that can meet the client's needs

• Collaborate with the client to prioritize requirements and adjust expectations

• Document the limitation and alternative solutions for future reference

Memoization is a technique used to cache the results of expensive function calls to improve performance.

• Create a cache object to store the results of function calls.

• Check if the function has already been called with the same arguments, if so return the cached result.

• If the function has not been called with the same arguments, calculate the result and store it in the cache.

OOPs (Object-Oriented Programming) is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain both data and functions to manipulate that data.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Encapsulation is the process of hiding the implementation details of an object from the outside world.

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

• Polymorphism allows objects to take on multiple f...read more

Union combines the results of two or more SELECT statements, while Union All includes all rows, including duplicates.

• Union removes duplicate rows, Union All includes all rows

• Union is slower as it has to remove duplicates, Union All is faster

• Union requires the same number of columns in each SELECT statement, Union All does not

Different kinds of joins in SQL are inner join, left join, right join, and full outer join.

• Inner join: Returns rows when there is a match in both tables.

• Left join: Returns all rows from the left table and the matched rows from the right table.

• Right join: Returns all rows from the right table and the matched rows from the left table.

• Full outer join: Returns rows when there is a match in either table.

Find second smallest number in array of strings

• Convert array of strings to array of integers

• Sort the array in ascending order

• Return the second element in the sorted array

LeadSquared is a marketing automation and CRM software that helps businesses manage leads and customer interactions.

• LeadSquared offers features such as lead capture, lead scoring, email marketing, and analytics.

• It integrates with various third-party tools such as Salesforce, Zapier, and Google Analytics.

• LeadSquared is used by businesses in various industries including real estate, education, healthcare, and finance.

• It helps businesses streamline their sales and marketing proc...read more

I handle exceptions by identifying the root cause, analyzing the situation, and implementing a solution.

• I first identify the root cause of the exception

• I analyze the situation and gather all necessary information

• I then implement a solution to resolve the exception

• I ensure that the solution is effective and prevents future exceptions

• For example, if a team member is consistently missing deadlines, I would identify the cause, such as a lack of resources or unclear expectations, ...read more

Toxic culture in sales can have detrimental effects on team morale and productivity.

• Identify the root cause of toxicity - such as aggressive competition, lack of support from management, or unrealistic targets.

• Implement clear communication channels to address issues and concerns within the team.

• Provide training and resources to help team members cope with stress and pressure.

• Encourage a positive and collaborative work environment to counteract toxic behaviors.

• Seek feedback fr...read more

Case statement in SQL is used to perform conditional logic and return different values based on specified conditions.

• Case statement can be used to replace multiple if-else statements in SQL queries.

• It can be used in SELECT, WHERE, and ORDER BY clauses.

• Syntax: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ELSE default_result END

• Example: SELECT name, CASE WHEN age < 18 THEN 'Minor' ELSE 'Adult' END AS age_group FROM users;

Windows functions in SQL are used to perform calculations across a set of rows related to the current row.

• Windows functions are used to calculate cumulative sums, averages, rankings, and more.

• Examples include ROW_NUMBER(), RANK(), DENSE_RANK(), SUM() OVER(), AVG() OVER().

STLC stands for Software Testing Life Cycle which is a process of testing software in a well-planned and systematic way.

• STLC involves planning, designing, executing, and reporting the test cases.

• It includes various stages like requirement analysis, test planning, test case development, test execution, and test closure.

• The main objective of STLC is to ensure that the software product is of high quality, meets the customer requirements, and is defect-free.

• SDLC stands for Softwa...read more

Queue can be implemented using two stacks

• Use two stacks to implement a queue data structure

• One stack is used for enqueue operation and the other for dequeue operation

• When dequeue is called, elements are popped from the second stack, if it's empty, elements are transferred from the first stack to the second stack and then popped

• When enqueue is called, elements are pushed to the first stack

POST is used to create a new resource, while PUT is used to update an existing resource.

• POST is used to create a new resource on the server.

• PUT is used to update an existing resource on the server.

• POST requests are not idempotent, while PUT requests are idempotent.

• POST requests do not require the client to specify the URI of the new resource, while PUT requests do.

• Example: POST /users creates a new user, PUT /users/123 updates user with ID 123.