100+ TCS Interview Questions and Answers

Identify the root cause and work with the customer to find a solution.

• Gather all necessary information about the requirement and the impact on the customer's business.

• Identify the root cause of the issue and determine if it can be resolved within the current system.

• If the issue cannot be resolved within the current system, work with the customer to find a workaround or alternative solution.

• Communicate regularly with the customer to keep them informed of progress and any poten...read more

A customer centered company prioritizes customer needs and satisfaction over profits.

• Focuses on understanding and meeting customer needs

• Values customer feedback and uses it to improve products/services

• Provides excellent customer service

• Tailors marketing and messaging to customer preferences

• Prioritizes long-term customer relationships over short-term profits

Yes, I believe I am fit for Product Marketing.

• I have a strong understanding of the target audience and their needs.

• I am skilled in market research and analysis.

• I have experience in developing and executing successful marketing campaigns.

• I am able to effectively communicate the value of a product to potential customers.

• I am creative and able to come up with innovative marketing strategies.

• I am able to work collaboratively with cross-functional teams to ensure product success.

Given an array, return a new array where each element is the product of all elements in the original array except the corresponding element.

• Create a new array of the same length as the input array

• Iterate through the input array and calculate the product of all elements except the current element

• Store the product in the corresponding position in the new array

• Return the new array

Money would not be a factor for me when pursuing my passion or helping others in need.

• I would prioritize my passion and purpose over financial gain

• I would donate to charities and causes that align with my values

• I would invest in experiences and personal growth opportunities

• I would prioritize spending time with loved ones and creating meaningful memories

• Examples: pursuing a career in the arts, volunteering for a non-profit organization, traveling to explore different cultures

To check static UI appearance, I would perform visual testing using tools like Applitools or Selenium.

• Use visual testing tools to compare screenshots of the UI before and after changes

• Check for consistency in font, color, layout, and alignment

• Ensure that all UI elements are visible and not overlapping

• Verify that the UI is responsive and looks good on different screen sizes

• Perform manual checks to ensure that the UI meets design specifications

Remote working can positively impact customer relations by providing flexibility, accessibility, and personalized communication.

• Remote working allows for more flexibility in scheduling meetings and calls with customers

• It also allows for easier accessibility to customers in different time zones or locations

• Personalized communication can be achieved through video conferencing and screen sharing

• Remote working can also lead to increased productivity and faster response times

• Howev...read more

702 is represented by ZZ in the given pattern.

• The pattern seems to be assigning numbers to alphabets based on their position in the English alphabet.

• The first letter represents the position in the alphabet and the second letter represents the position multiplied by 26.

• Therefore, ZZ represents 26*26 + 26 = 702.

Freshdesk - Customer Support Software

• Omnichannel support for email, phone, chat, social media

• Automated ticket routing and prioritization

• Knowledge base for self-service support

• SLA management and reporting

• Integrations with other tools like CRM and project management

• Mobile app for agents and customers

The department with the maximum number of students needs to be found.

• Join the Department and Student tables on the dept_id column

• Group the data by department

• Count the number of students in each department

• Find the department with the maximum count

Count the number of hard nodes in a binary tree.

• Traverse the binary tree using any traversal algorithm.

• Compare the value of each node with its root's value.

• Increment the count if the node's value is greater than its root's value.

Design a database to store custom fields for a ticket.

• Identify the custom fields needed for a ticket

• Create a table for each custom field

• Link the tables to the main ticket table using foreign keys

• Use appropriate data types for each custom field

• Consider indexing frequently searched fields

The given input string needs to be decoded to produce the output string.

• The input string contains nested encoding of characters.

• The number preceding the square brackets indicates the number of times the characters inside the brackets should be repeated.

• The characters outside the square brackets are repeated as is.

• The decoding needs to be done recursively.

• The output string is obtained by decoding the input string.

Program to check if a given number is prime or not.

• A prime number is only divisible by 1 and itself.

• Loop through numbers from 2 to n/2 and check if n is divisible by any of them.

• If n is divisible by any number, it is not prime.

• If n is not divisible by any number, it is prime.

A tiny URL application is built by generating short aliases for long URLs, storing them in a database, and redirecting users to the original URL when the alias is accessed.

• Generate a unique short alias for each long URL

• Store the alias and corresponding long URL in a database

• Implement a redirect mechanism to redirect users from the alias to the original URL

• Handle edge cases like duplicate URLs, expired aliases, and invalid URLs

The keys to marketing success are understanding your audience, creating a strong brand, and effective communication.

• Understand your target audience and their needs

• Create a strong brand identity that resonates with your audience

• Develop a clear and concise message that communicates the value of your product or service

• Utilize multiple channels to reach your audience, including social media, email marketing, and advertising

• Measure and analyze your marketing efforts to continually...read more

Count pairs in an array whose sum is a perfect square.

• Iterate through the array and calculate the sum of each pair.

• Check if the sum is a perfect square using a function.

• Increment a counter if the sum is a perfect square.

• Return the final count of pairs.

Business market refers to organizations that buy goods and services for use in their own products or operations, while consumer market refers to individuals or households who buy goods and services for personal use.

• Business market involves larger purchases and longer decision-making processes

• Consumer market involves smaller purchases and shorter decision-making processes

• Business market focuses on functionality and efficiency, while consumer market focuses on emotions and pers...read more

The question is unclear and lacks context. Please provide more information.

• Please provide more information about the specific requirements of the task.

• What is the purpose of the Pascal triangle and how does it relate to sorting numbers by occurrence?

• What programming language and tools should be used for this task?

I will sell this pen by highlighting its unique features and demonstrating its usefulness in various scenarios.

• Emphasize the pen's sleek design and high-quality materials

• Highlight its smooth writing experience and quick-drying ink

• Demonstrate its versatility by showcasing its compatibility with different paper types

• Offer a special promotion or discount to incentivize purchase

• Provide testimonials from satisfied customers who have benefited from using the pen

My expected CTC is in line with industry standards and commensurate with my experience and skills.

• I have researched the market and have a good understanding of the salary range for this position.

• I am open to negotiation based on the specific responsibilities and benefits offered.

• I am looking for a fair and competitive compensation package.

• Based on my experience and skills, I am expecting a salary range of X to Y.

• I am also open to discussing performance-based incentives and bo...read more

SQL databases are suitable for structured data and complex queries, while NoSQL databases are better for unstructured data and high scalability.

• Use SQL databases when data has a fixed schema and relationships between entities are well-defined.

• Use NoSQL databases when data is unstructured or semi-structured, and when high scalability and performance are required.

• SQL databases are better for complex queries involving multiple tables and joins.

• NoSQL databases are suitable for ha...read more

To grow business in pandemic, focus on digital transformation, adapt to changing customer needs, and explore new markets.

• Invest in digital marketing and e-commerce platforms

• Offer flexible payment and delivery options

• Develop new products or services that cater to pandemic-related needs

• Explore new markets or partnerships

• Prioritize customer communication and support

• Optimize supply chain and operations for efficiency

• Consider remote work and virtual events to reduce costs

• Monitor i...read more

When handling escalating customers, it is important to remain calm, listen actively, empathize, and find a solution.

• Stay calm and composed throughout the interaction.

• Listen actively to the customer's concerns and frustrations.

• Empathize with the customer and acknowledge their feelings.

• Take ownership of the issue and assure the customer that you will find a solution.

• Offer alternative solutions or escalate the issue to a higher authority if necessary.

• Follow up with the customer ...read more

Find all triplets in an array of integers without duplicates

• Iterate through the array and for each element, find all pairs that sum up to the negative of that element

• Use a set to store the seen elements to avoid duplicates

• Time complexity can be improved to O(n^2) by sorting the array first

Amazon Prime - free shipping, streaming, and more

• Amazon Prime offers free two-day shipping on eligible items

• Prime members also have access to streaming of movies, TV shows, and music

• Additional benefits include early access to select lightning deals and free e-books

• Prime Wardrobe allows members to try on clothing before purchasing

To find all square matrices in a given matrix, iterate through each cell as the top left corner of a potential square matrix and check if all elements within the square are the same.

• Iterate through each cell in the matrix as the top left corner of a potential square matrix

• For each cell, check if all elements within the square formed by the cell are the same

• If all elements are the same, consider it as a square matrix

Designing a scheduler system and handling tough situations as a manager

• Understand the requirements and constraints of the scheduler system

• Consider scalability, reliability, and efficiency in the design

• Implement algorithms for task scheduling and resource allocation

• Handle conflicts and prioritize tasks effectively as a manager

• Communicate clearly with team members and stakeholders during tough situations

Integration test cases ensure different modules work together correctly

• Identify integration points between modules

• Test data flow between modules

• Verify communication between modules

• Check for data consistency across modules

The immediate higher number to the right of each element in an array

• Iterate through the array from right to left

• For each element, compare it with the elements to its right to find the immediate higher number

• Store the immediate higher number in a new array

Automation challenges include tool selection, maintenance, and test case design.

• Selecting the right automation tool for the project

• Maintaining the automation scripts as the application changes

• Designing effective test cases for automation

• Handling dynamic elements on the application

• Integrating automation with CI/CD pipeline

• Ensuring test data availability and consistency

• Managing test environment and infrastructure

• Dealing with flaky tests and false positives

• Ensuring cross-browser...read more

A hub, switch, and router are networking devices used to connect devices in a network.

• A hub is a simple device that connects multiple devices in a network, but it does not manage or control the traffic.

• A switch is a more advanced device that connects devices in a network and manages the traffic by directing it to the intended recipient.

• A router is a device that connects multiple networks and directs traffic between them, making decisions based on IP addresses.

• Example: A hub i...read more

Program to find duplicate elements from array of strings

• Iterate through the array and store elements in a HashMap with element as key and count as value

• Check if count of any element is greater than 1, then it is a duplicate

Loop through the linked list to find and remove a specific node

• Start at the head of the linked list and iterate through each node

• Check if the current node matches the one to be removed

• If found, update the pointers to skip over the node and remove it

• Continue until the end of the list is reached

Debugging an application involves identifying and fixing issues in the code, while writing test cases ensures the application functions correctly.

• Understand the functionality of the application and identify the root cause of the issue

• Use debugging tools like breakpoints, logging, and stack traces to pinpoint the problem

• Write test cases to cover different scenarios and ensure the issue is resolved

• Reproduce the issue to validate the fix and prevent regression

• Document the debugg...read more

The question is asking to calculate the number of hops an elevator needs to travel between floors.

• Calculate the difference between the starting floor and the destination floor

• Divide the difference by the maximum number of floors the elevator can travel in one hop

• Round up the result to get the number of hops needed

An online real time document sharing tool for collaboration and communication

• Implement real-time editing and commenting features

• Allow multiple users to access and edit the document simultaneously

• Provide version control and history tracking

• Include user authentication and permission settings

• Support various file formats such as text, images, and videos

Implementing hashmap in Java

• Create an array of linked lists to store key-value pairs

• Hash the key to get the index of the array

• Insert the key-value pair at the index in the linked list

• Handle collisions by chaining

• Implement methods like put(), get(), remove()

• Use generics to allow any type of key-value pairs

To find the Kth largest number in a Binary Search Tree (BST), we can perform an in-order traversal and keep track of the Kth largest element.

• Perform an in-order traversal of the BST to get the elements in non-decreasing order.

• Keep track of the Kth largest element while traversing the BST.

• Return the Kth largest element once found.

Find the max element in the array

• Iterate through the array and compare each element with a variable storing the current max value

• Use built-in functions like Math.max() or spread operator to find the max value

• Consider edge cases like empty array or array with negative values

Framework is a set of guidelines, standards, and tools used to develop and execute automated tests.

• Framework provides a structure for organizing test cases and test data.

• It helps in reducing the effort required for test automation.

• It provides reusable components and libraries for test automation.

• Examples of frameworks are Selenium, Appium, TestNG, JUnit, etc.

A lambda function in Python is a small anonymous function defined using the lambda keyword.

• Lambda functions can have any number of arguments, but can only have one expression.

• Syntax: lambda arguments : expression

• Example: lambda x, y : x + y

Debounce function delays the execution of a function until after a specified amount of time has passed since the last time it was invoked.

• Create a function that takes a function and a delay time as parameters

• Use setTimeout to delay the execution of the function

• Use clearTimeout to reset the timer if the function is invoked again within the delay time

My typing speed is 80 words per minute.

• Typing speed: 80 words per minute

• Accuracy: 98%

• Experience with data entry tasks

• Proficient in using typing software

• Regular practice to improve speed

A commit in SQL is a command that saves all the changes made in a transaction to the database.

• A commit is used to make all the changes made in a transaction permanent.

• Once a commit is issued, the changes cannot be rolled back.

• It is important to use commit to ensure data integrity and consistency.

• Example: COMMIT; - this command is used to commit the changes in a transaction.

Yes, I am familiar with C programming language.

• I have experience writing and debugging C programs

• I am comfortable working with data structures and algorithms in C

• I have worked on projects where C was the primary language used

Living feslety is not a known term or concept in the security field.

• Living feslety is not a recognized term or concept in the security industry.

• It is possible that the interviewer misspoke or meant to ask a different question.

• As a security officer, it is important to be knowledgeable about various security protocols and procedures.

• Some common responsibilities of a security officer include monitoring surveillance footage, patrolling premises, and responding to emergencies.

• It i...read more

Quota carrying refers to the sales target or goal that a salesperson is expected to meet within a specific time period.

• Quota carrying is typically measured in terms of revenue or units sold.

• Salespeople are often incentivized to meet or exceed their quota through bonuses or commissions.

• Quotas can be set on a monthly, quarterly, or annual basis.

• Failure to meet quota may result in consequences such as reduced commissions or even termination.

• Example: A Bdm Executive may have a mo...read more

Caching is a technique used to store frequently accessed data in a temporary storage for faster retrieval.

• Caching improves performance by reducing the need to fetch data from the original source.

• It involves storing data in a cache, which is a high-speed storage system closer to the user or application.

• When a request is made for data, the cache is checked first, and if the data is found, it is returned quickly.

• If the data is not in the cache, it is fetched from the original so...read more

Check if a given string is a palindrome

• Iterate through the string from both ends and compare characters

• Ignore spaces and punctuation marks while checking for palindrome

• Convert the string to lowercase for case-insensitive comparison

Software development life cycle is a process used by software development teams to design, develop, test, and deploy software.

• It involves planning, designing, coding, testing, and deployment stages.

• Each stage has specific goals and deliverables.

• Examples of SDLC models include Waterfall, Agile, and DevOps.

Transactions in Spring Boot manage database transactions in a declarative way.

• Spring Boot uses @Transactional annotation to mark a method as transactional.

• Transactions can be managed at class level or method level.

• Rollback can be configured based on specific exceptions.

• Example: @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)

Yes, I am familiar with C++ programming language.

• I have experience in writing C++ code for various projects.

• I am comfortable with concepts like classes, inheritance, polymorphism, and templates.

• I have used C++ for data structures and algorithms implementations.

• I have worked with libraries like STL in C++.

Iterate through the matrix to find the largest square of 1s

• Iterate through each cell in the matrix

• For each cell, check if it is part of a square of 1s by checking the cells to the right, below, and diagonally right-down

• Keep track of the size of the largest square found

Spark can be used for real-time data processing in streaming use cases.

• Spark Streaming allows for processing real-time data streams.

• It can handle high-throughput and fault-tolerant processing.

• Examples include real-time analytics, monitoring, and alerting.

dbutils is a utility provided by Databricks for interacting with files and directories in the Databricks environment.

• dbutils.fs.ls('/') - list files in root directory

• dbutils.fs.cp('dbfs:/file.txt', 'file.txt') - copy file from DBFS to local file system

• dbutils.fs.mkdirs('dbfs:/new_dir') - create a new directory in DBFS

The question is asking about the average revenue per account (ARR) of those accounts.

• ARR is calculated by dividing the total annual revenue generated from a group of accounts by the number of accounts in that group.

• For example, if a group of 10 accounts generated a total revenue of $100,000 in a year, the ARR would be $10,000 ($100,000 / 10).