10+ HCLTech Interview Questions and Answers

Team B is the best team because they are willing to help others when required, showing teamwork and collaboration.

• Team B's willingness to help others demonstrates teamwork and collaboration, which are essential qualities in a successful team.

• Team A's refusal to help others may lead to a lack of cohesion and support within the team.

• In the long run, a team that is supportive and collaborative like Team B is more likely to succeed and achieve their goals.

• Examples: Team B's willi...read more

To bring up a down micro service in a cluster, use automated monitoring and recovery tools.

• Use a monitoring tool to detect when a service is down

• Configure the tool to automatically restart the service

• Ensure that the tool is configured to handle multiple services in a cluster

• Consider using container orchestration tools like Kubernetes or Docker Swarm

• Test the automated recovery process regularly to ensure it is working properly

Accrual accounting recognizes revenue and expenses when they are incurred, while prepaid expenses are expenses paid in advance.

• Accrual accounting records revenue and expenses when they are earned or incurred, regardless of when cash is exchanged.

• Prepaid expenses are expenses that have been paid in advance but have not yet been incurred.

• Accrual accounting provides a more accurate representation of a company's financial position and performance over time.

• Prepaid expenses are ty...read more

Program for global exception handling and character frequency in sentence

• Use try-except block to handle exceptions globally

• Use collections module to count character frequency

• Iterate through the sentence and count each character

• Print the character frequency in descending order

Direct material is used in the production process while indirect material is not directly used but is necessary for production.

• Direct material is a primary component of a product and can be traced to the final product, such as raw materials used in manufacturing.

• Indirect material is not a primary component of a product but is necessary for production, such as tools, lubricants, and cleaning supplies.

• Direct material is included in the cost of goods sold while indirect material...read more

Supply chain management is the coordination and management of activities involved in the production and delivery of products and services.

• It involves planning, sourcing, manufacturing, and delivering products to customers.

• It aims to optimize the flow of goods and services, minimize costs, and improve efficiency.

• It includes managing relationships with suppliers, distributors, and customers.

• Examples include inventory management, transportation logistics, and demand forecasting.

Stream is sequential processing while parallel stream allows for parallel processing.

• Stream processes elements sequentially

• Parallel stream processes elements concurrently

• Parallel stream can improve performance for large datasets

• Example: List<String> list = Arrays.asList("a", "b", "c"); Stream<String> stream = list.stream(); Stream<String> parallelStream = list.parallelStream();

Sort Map values in ascending order using stream

• Use the entrySet() method to get a set view of the mappings contained in the map

• Use the stream() method to convert the set to a stream

• Use the sorted() method to sort the stream based on the values

• Use the collect() method to collect the sorted entries back into a map

We use a variety of technologies and models depending on the project requirements.

• We use agile methodologies for project management.

• For web development, we use technologies such as HTML, CSS, JavaScript, and frameworks like React and Angular.

• For mobile app development, we use technologies like Java, Kotlin, Swift, and React Native.

• For machine learning projects, we use models like linear regression, decision trees, and neural networks.

• We also use cloud technologies like AWS an...read more

Procure to pay is the process of acquiring goods and services from a vendor and paying for them.

• It involves identifying the need for goods or services

• Selecting a vendor

• Negotiating a contract

• Receiving the goods or services

• Approving the invoice

• Making payment to the vendor

• Examples include purchasing office supplies, hiring a contractor for a project, or ordering raw materials for manufacturing

Callable is an interface representing a function that can be called. Streams are used with algorithms to perform operations on collections.

• Callable interface in Java can be used to represent a function that can be called. It is often used in multithreading scenarios.

• Streams in Java are used with algorithms to perform operations on collections. They provide a way to process elements in a declarative way.

• Example: Using a Callable to perform a task in a separate thread, and usin...read more

Design a tinyURL system using coding

• Generate a unique short code for each long URL

• Store the mapping of short code to long URL in a database

• Redirect the short URL to the corresponding long URL when accessed

Designing pageable queries for efficient data retrieval

• Use LIMIT and OFFSET clauses in SQL queries

• Implement pagination logic in backend code to handle large datasets

• Consider using cursor-based pagination for more efficient querying

Transaction management in JPA involves managing database transactions to ensure data consistency and integrity.

• JPA provides support for transaction management through EntityTransaction interface.

• Transactions can be managed programmatically using begin, commit, and rollback methods.

• Transactions can also be managed declaratively using annotations like @Transactional.

• Example: EntityManager entityManager = entityManagerFactory.createEntityManager();

• Example: EntityTransaction tran...read more

React library is a collection of reusable components and functions for building React applications.

• Different React libraries offer unique features and functionalities to enhance development.

• Popular React libraries include Redux for state management, React Router for routing, and Material-UI for styling.

• Choosing the right React library depends on the specific requirements of the project and the developer's familiarity with the library.

Experienced team lead with a background in project management and strong communication skills.

• Over 5 years of experience leading teams in various industries

• Skilled in project planning, delegation, and conflict resolution

• Excellent communication and interpersonal skills

• Proven track record of meeting deadlines and exceeding goals