HCLTech Technical Lead Interview Questions, Process, and Tips

Q1. What is the purpose of react and it's latest hooks?
Ans. 
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
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Q2. What is Redux and Redux purpose?
Ans. 
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
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Q3. Redux which is a state management framework where we can manager state within store and we can connect with that store to get the global state into all the react components. Redux come with it's own struct...read more
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Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q2. What is method overriding
Ans. 
Method overriding is a feature in object-oriented programming where a subclass provides a specific implementation of a method that is already provided by its parent class.
• Occurs in inheritance when a subclass provides a specific implementation of a method that is already provided by its parent class

• The method in the subclass must have the same name, return type, and parameters as the method in the parent class

• Allows fo...read more
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Q1. What is interceptor
Ans. 
An interceptor is a design pattern commonly used in software development to capture and manipulate incoming and outgoing requests.
• Interceptors can be used for logging, authentication, authorization, error handling, and more

• In Angular, interceptors can be used to modify HTTP requests before they are sent to the server

• In Spring framework, interceptors can be used to intercept client requests and server responses
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Q2. What is filter in spring
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A filter in Spring is a component that intercepts incoming requests and outgoing responses, allowing for pre-processing and post-processing.
• Filters are used for tasks such as logging, authentication, authorization, and more

• Filters can be configured in the Spring application context

• Examples of filters in Spring include CharacterEncodingFilter, HiddenHttpMethodFilter, and CorsFilter
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Q1. What is your contribution
Ans. 
My contribution as a Technical Lead includes leading a team, providing technical guidance, resolving technical issues, and ensuring project success.
• Leading a team to achieve project goals

• Providing technical guidance and mentorship to team members

• Resolving technical issues and challenges

• Ensuring project success through effective planning and execution
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Q2. What have you done in your project
Ans. 
I have led a team in developing a new feature for our product, involving designing, coding, testing, and deployment.
• Led a team in developing a new feature

• Designed the architecture for the feature

• Coded the functionality using Java and Spring Boot

• Tested the feature using JUnit and Mockito

• Deployed the feature to production environment
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Q1. How soon can you join
Ans. 
I can join within 2 weeks.
• I can start within 2 weeks of receiving an offer.

• I need to give notice to my current employer.

• I may need time to relocate if necessary.
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Q2. How was your last interview
Ans. 
My last interview went well, I was able to showcase my technical skills and experience effectively.
• Prepared thoroughly by reviewing common technical interview questions

• Highlighted my experience leading technical teams and projects

• Demonstrated problem-solving skills with real-life examples

• Received positive feedback on my communication and teamwork abilities
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Q1. Are you ready to travel?
Ans. 
Yes, I am ready to travel for work as needed.
• I am willing to travel for client meetings, conferences, and team collaborations.

• I have previous experience traveling for work in my current or past roles.

• I understand the importance of face-to-face interactions in a technical lead role.
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Q2. Have you talked to your reporting manager
Ans. 
Yes, I regularly communicate with my reporting manager to provide updates and discuss any issues or concerns.
• Regularly scheduled check-ins with reporting manager

• Provide updates on project progress

• Discuss any issues or concerns

• Seek guidance and feedback from reporting manager
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Q1. How do microservices communicate?
Ans. 
Microservices communicate through lightweight protocols like HTTP, messaging queues, and RPC.
• HTTP: RESTful APIs are commonly used for communication between microservices.

• Messaging queues: Services can communicate asynchronously through message brokers like RabbitMQ or Kafka.

• RPC (Remote Procedure Call): Services can make direct calls to each other using protocols like gRPC.
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Q2. What is the internal working of a HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• To retrieve a value, the key is hashed a...read more
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Q1. Covered all html css js and React topics
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Covered all html css js and React topics with real time scenarios and what we will do in given situations