HCLTech Technical Lead Interview Questions, Process, and Tips

Product life cycle refers to the stages a product goes through from its introduction to its decline.

• Introduction: The product is launched in the market.

• Growth: Sales and market share increase as more customers adopt the product.

• Maturity: Sales stabilize as the product reaches its peak market penetration.

• Decline: Sales decline due to market saturation or the introduction of newer products.

• Example: The iPhone product lif...read more

To create a thread in Linux, use the pthread_create() function.

• Include the pthread.h header file

• Declare a pthread_t variable to hold the thread ID

• Call pthread_create() function with the thread ID, attributes, start routine, and arguments

• Example: pthread_t tid; pthread_create(&tid, NULL, start_routine, NULL);

Use synchronization mechanisms like locks, semaphores, or monitors to access variables in multi-threaded applications.

• Use synchronized keyword in Java to ensure only one thread can access the variable at a time.

• Use locks and mutexes in C++ to protect shared resources.

• Use atomic variables in C# to ensure thread safety.

• Use thread-safe data structures like ConcurrentHashMap in Java.

• Avoid using global variables in multi-th...read more

React is a JavaScript library for building user interfaces. React Hooks are a feature introduced in React 16.8 to manage state and lifecycle in functional components.

• React is used for creating reusable UI components

• React allows for efficient rendering and updating of components

• React Hooks provide a way to use state and other React features in functional components

• Hooks like useState and useEffect are commonly used in R

Redux is a predictable state container for JavaScript apps.

• Redux is a library for managing application state

• It provides a predictable state container by enforcing a strict unidirectional data flow

• Redux can be used with any UI library or framework

• It is commonly used with React to manage state in complex applications

• Redux allows for easy debugging and testing of state changes

• Actions are dispatched to update the state, an...read more